Dual-sensor astronomical camera

Abstract

Provided in the present disclosure is a dual-sensor astronomical camera, comprising a first sensor and a second sensor, wherein the first sensor is used for capturing an image, and the second sensor is used for star guiding. A camera structure comprises a heat sink and a cooler, wherein one side of the cooler is in contact with a circuit board of the first sensor by means of a silicone pad, and the other side of the cooler is in contact with the heat sink, thereby ensuring effective heat dissipation and vibration damping. A fixing member comprises an upper panel and side panels, wherein a fan is fixed to the upper panel by means of soft rubber pins, thereby reducing vibration during operation. The vertical position of the second sensor is adjusted by means of an adjustment structure, which comprises a lower slider and an upper slider; by means of the rotation of an adjusting screw, the upper slider moves along an inclined surface of the lower slider, thereby achieving precise adjustment of the position of the second sensor relative to the first sensor, enabling photosensitive components of the two sensors to be located on the same focal plane, and optimizing the focal length and imaging effects.

Description

Dual-sensor astronomical camera

[0001] Cross-reference to Related Applications

[0002] This application claims priority to the Chinese patent application No. 2024210497467, filed on May 15, 2024, entitled “Dual-sensor astronomical camera”, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present disclosure relates to the technical field of cameras, in particular to a dual-sensor astronomical camera. BACKGROUND

[0004] Astronomical deep space photography must require two cameras, one camera for guiding the star to track the target celestial body, and one camera for shooting the target celestial body. The planet camera is used for guiding the star, and the refrigeration camera is used for shooting the target. In the existing field of astronomical photography, two cameras are required to complete the work of deep space photography. The disadvantage is that two independent cameras are required, and a star guiding device is also needed, which increases the connection cable of the device and makes the overall installation of the camera particularly inconvenient. At the same time, since the telescope is rotated on the equatorial mount, the cable is easily tangled and wound on the equatorial mount during shooting, which can cause damage to the equipment. In addition, during long-term astronomical observation, the lack of star guiding function can easily cause tracking errors, resulting in blurred images.

[0005] In order to overcome the above problems, a dual-sensor camera is provided in the prior art. The structure of the dual-sensor camera is disclosed in the publication No. CN215379068U entitled “Dual-sensor camera”. The dual-sensor camera generally includes a main sensor for shooting celestial images and another sensor for guiding the star, thereby ensuring that the camera can maintain stable tracking during long-time exposure and obtain clearer astronomical images. By integrating the star guiding sensor and the shooting sensor in the same connection seat, the cost and complexity of the equipment are reduced, and the portability and installation convenience of the camera are improved. The design includes a sealing cover for protecting the internal circuit board and sensor, and a glass plate is provided above the star guiding sensor to optimize the light path and imaging effect. The camera is also equipped with a refrigerator and a cooling fan, which effectively dissipates heat and ensures that the sensor works in a low-temperature environment, reduces noise, and improves image quality. The adjustment structure can accurately adjust the position of the sensor through the limiting slide rod and the motor, so that the camera can achieve better focal length adjustment and imaging clarity.

[0006] Although the dual-sensor camera in the prior art has made progress in many aspects, there are still some problems to be solved. First, fan vibration will interfere with the sensor, especially during long exposure, causing image blur and affecting image quality. Therefore, effective measures must be taken to reduce the impact of fan vibration on the sensor. Second, the environment control inside the sealed cavity housing needs to be improved, especially the filling of dry gas, to prevent the impact of humidity and condensation on sensor performance and image quality. Although a refrigerator is used to control the sensor temperature, its effect in combination with dry gas inside the sealed cavity has not been fully considered. Effective temperature control in combination with dry gas can significantly improve image quality and reduce noise. In addition, although the existing adjustment structure can adjust the position of the sensor, its accuracy and operational convenience need to be improved, especially the relative position adjustment of the first sensor and the second sensor, which requires a more accurate and stable mechanism to ensure the best focal length and imaging effect. Finally, although the existing heat dissipation design is effective, it may still have problems with insufficient heat dissipation during long operation. Therefore, further optimization of the heat dissipation structure to ensure stable operation of the sensor in various working environments is key to improving the performance of the camera. By solving these problems, the high-precision requirements of astronomical deep space photography can be better met.

[0007] Practical new type content

[0008] The purpose of the present disclosure is to provide a dual-sensor astronomical camera to solve the problems raised in the background art.

[0009] To achieve the above-mentioned purpose, the present disclosure provides the following technical solutions:

[0010] A dual-sensor astronomical camera, comprising a first sensor for taking images and a second sensor for guiding stars, further comprising,

[0011] A heat sink is provided on one side of the first sensor and the second sensor.

[0012] A fixing member is installed on the outside of the heat sink, and the fixing member comprises an upper panel on which a fan is fixed.

[0013] Optionally, the fan is fixed to the upper panel by soft rubber nails; the side plates on one side or both sides of the upper panel are fixed with circuit boards.

[0014] Optionally, the first sensor is provided with a dust cover.

[0015] Optionally, it further comprises a refrigerator, one side of which is used to provide refrigeration for the first sensor, and the other side is in contact with the heat sink.

[0016] Optionally, the first sensor is arranged in a sealed cavity housing.

[0017] Further, the second sensor adjusts the up and down position of the second sensor through the adjusting structure;

[0018] The adjusting structure comprises,

[0019] The lower slider has a first inclined surface, and the upper slider has a second inclined surface, the lower slider is threadedly connected with one end of the adjusting screw, and the lower slider is pushed to move under the action of the adjusting screw, so that the upper slider is passively moved along the first inclined surface of the lower slider through the second inclined surface;

[0020] The second sensor is arranged on the second plate body, and the two ends of the second plate body are connected with the upper slider through guide columns.

[0021] Optionally, a window sheet is arranged on the sealed cavity shell, and a heating sheet is arranged on the window sheet.

[0022] Optionally, the refrigerator is in contact with the first sensor through a heat-conducting material.

[0023] Optionally, the sealed cavity shell is provided with a notch, a flange sleeve for fixing the adjusting screw is arranged in the notch, the other end of the adjusting screw is connected with an adjusting hand wheel, and a sealing ring is arranged at the position of the notch.

[0024] Optionally, the sealed cavity shell is connected with the flat ring through fastening.

[0025] Compared with the prior art, the present disclosure has the following beneficial effects:

[0026] Firstly, the design of fixing the fan on the upper panel by the fixing member and the soft rubber nails effectively reduces the vibration generated by the fan during operation. This design significantly reduces the interference of vibration on the first sensor and the second sensor when taking pictures, ensures the stability and clarity of the image during long-time exposure, and improves the overall imaging quality. Secondly, by arranging the heat dissipation fins on one side of the first sensor and the second sensor, and designing the contact between the refrigerator and the heat dissipation fins, the effective heat dissipation of the sensor during operation is ensured. One side of the refrigerator is used to provide refrigeration for the first sensor, and the other side is in contact with the heat dissipation fins, which further improves the heat dissipation efficiency, ensures the operation of the sensor in a low-temperature environment, reduces the influence of thermal noise, and improves the image quality.

[0027] In addition, the present disclosure is provided with a sealed cavity shell in which the first sensor is arranged, a window sheet and a heating sheet are arranged on the sealed cavity shell, and dry gas is filled. This design prevents the influence of humidity and condensation on the performance of the sensor and the quality of the image, ensures the stable operation of the sensor in a dry and low-temperature environment, and improves the quality of image generation. Secondly, the second sensor adjusts the up and down positions through the adjusting structure, including a lower sliding block with a first inclined surface and an upper sliding block with a second inclined surface, and the lower sliding block is moved by the adjusting screw, so that the upper sliding block moves along the first inclined surface of the lower sliding block. The second sensor is arranged on the second plate body, and the second plate body is connected with the upper sliding block through the guide column. This precise adjustment mechanism ensures that the relative positions of the first sensor and the second sensor can be accurately adjusted as needed, optimizing the focal length and imaging effect.

[0028] At the same time, the present disclosure is provided with a dust cover on the first sensor, which avoids the influence of environmental dust on the sensor, and further improves the clarity and quality of the image. The dustproof design is combined with the sealed cavity shell, which provides double protection to ensure that the sensor can maintain the best working state in various environments. In addition, the sealed cavity shell is provided with a notch, and a flange sleeve for fixing the adjusting screw is arranged in the notch, one end of the adjusting screw is connected with the adjusting hand wheel, and a sealing ring is arranged at the position of the notch. This design ensures the stability and sealing of the adjusting mechanism, further improving the reliability of the equipment. Finally, the sealed cavity shell is connected with the plane ring through fastening, which ensures the stability and reliability of the whole structure, and further improves the service life of the camera in different working environments. Through the combination of the above technical features, the present disclosure has been significantly improved in terms of heat dissipation, dust prevention, stability and sensor position adjustment, effectively improving the overall performance of the dual-sensor astronomical camera, and is suitable for higher precision astronomical observation tasks. BRIEF DESCRIPTION OF DRAWINGS

[0029] Fig. 1 is a schematic diagram of the overall structure of the present disclosure.

[0030] Fig. 2 is a top view of Fig. 1.

[0031] Fig. 3 is a schematic diagram of the fixing member of the present disclosure.

[0032] Fig. 4 is a schematic diagram of the fan arranged in the fixing member of the present disclosure.

[0033] Fig. 5 is a schematic diagram of the heat sink and fixing structure of the present disclosure.

[0034] Fig. 6 is a schematic diagram of the connection between the control board and the fixing member of the present disclosure.

[0035] Fig. 7 is a sectional view of Fig. 1.

[0036] Fig. 8 is a schematic diagram of the internal structure of the present disclosure.

[0037] In the figure: 1 - sleeve; 2 - sealing cavity shell; 3 - sealing cover; 4 - flat ring; 5 - rear cover; 6 - WIFI antenna; 7 - radiator; 8 - hand wheel; 9 - window piece; 10 - pressing plate; 11 - hexagonal screw; 12 - screw; 13 - copper column; 14 - soft wire one; 15 - soft wire two; 16 - pressing block; 17 - fan; 18 - fixing piece; 19 - cross screw; 20 - control board one; 21 - control board two; 22 - support column; 23 - loudspeaker; 24 - soft rubber nail; 25 - soft wire three; 26 - focusing screw; 27 - lower sliding block; 28 - refrigerator; 29 - upper sliding block; 30 - second sensor; 31 - first sensor; 32 - dust cover; 33 - heating sheet. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present disclosure will be described clearly and completely below in combination with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present disclosure.

[0039] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present disclosure.

[0040] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present disclosure, the meaning of "several" is two or more, unless otherwise specifically limited.

[0041] Please refer to FIG. 1-FIG. 8, as shown in FIG. 1 and FIG. 2, including sleeve 1, the bottom of sleeve 1 is provided with sealed cavity shell 2, sleeve 1 is provided with sealed cover 3, the inside of sleeve 1 is respectively provided with first sensor 31 and second sensor 30, the upper side of first sensor 30 is provided with window sheet 9, and heating sheet 33 is arranged on window sheet 9. The rear cover 5 is installed on the rear side of the sealed cavity shell 2, which is used to protect the internal components and provide additional structural support. WIFI antenna 6 is used for wireless data transmission, which facilitates communication and data exchange between the camera and external devices. The main function of the sealed cavity shell 2 is to provide a closed working environment for the first sensor 31 and the second sensor 30, preventing moisture and dust in the external environment from entering the inside of the shell, protecting the sensor from moisture and dust, and ensuring the long-term stable work of the sensor. In addition, the sealed cavity shell 2 is filled with dry gas, which further prevents moisture condensation, especially when long-time exposure is carried out in low-temperature environment, preventing dew condensation on the surface of the sensor, thereby ensuring the normal work of the sensor and the stability of the image quality. The sealed cavity shell 2 provides a solid shell to protect the internal sensors and circuit boards from external physical impact and vibration, improving the durability and reliability of the device. The main function of the heating sheet 33 on the window sheet 9 is to prevent dew condensation on the surface of the window sheet, ensuring that the sensor can take clear images. In cold or humid environments, the surface of the window sheet is prone to dew condensation due to low temperature, which will affect the light path and make the captured image unclear. The heating sheet 33 keeps the surface temperature of the window sheet higher than the dew point by heating the window sheet, effectively preventing dew condensation and ensuring the clarity of the light path. The heating sheet 33 keeps the temperature of the window sheet 9 stable, so that the sensor can take high-quality images in various environmental conditions, unaffected by changes in external temperature and humidity. By preventing dew condensation, the heating sheet 33 reduces the optical performance degradation of the window sheet caused by moisture condensation, prolongs the service life of the device, and improves the reliability and stability of the device in harsh environments. The sealed cavity shell 2 and the heating sheet 33 on the window sheet 9 work together to ensure that the dual-sensor astronomical camera can work stably in various complex environments and take high-quality astronomical images.

[0042] As shown in FIG. 3 and FIG. 4, the fixing part 18 includes an upper panel and two side panels, which are connected by screws to form a stable structure. The upper panel is provided with a hollow structure for mounting the fan 17. The fan 17 is fixed to the upper panel by soft rubber nails 24, which provides a certain elastic space between the fan and the fixing part. Specifically, the hollow structure on the upper panel provides sufficient space for the installation of the fan 17, allowing the fan to be embedded in the hollow part. The elastic characteristics of the soft rubber nails 24 effectively absorb and buffer the vibration generated by the fan during operation. The fan 17 generates a certain amount of vibration during operation. By using soft rubber nails 24 to connect the fan 17 and the upper panel of the fixing part 18, this flexible connection method can significantly reduce vibration transmission. The elastic material of the soft rubber nails 24 can absorb the vibration energy of the fan during operation, converting most of the vibration energy into the motion of internal particles, thereby reducing the vibration transmitted to the fixing part 18. This shock-absorbing principle ensures the stability and clarity of the sensor when capturing images, avoiding the decline in image quality caused by fan vibration. Through this design, the present disclosure can maintain high-quality and stable images during long exposure.

[0043] As shown in FIG. 5, the heat sink 7 is arranged on one side of the first sensor 31 and the second sensor 30, effectively dissipating heat by increasing the heat dissipation area. One side of the refrigerator 28 is in contact with the first panel carrying the first sensor through a silica gel pad, providing cooling for the first sensor 31. The other side of the refrigerator 28 is in contact with the heat sink 7, effectively dissipating heat through the heat sink 7, thereby improving the heat dissipation efficiency, ensuring the sensor to work in a low-temperature environment, reducing the influence of thermal noise, and further improving the image quality.

[0044] As shown in Figure 6, the control board one 20 and the control board two 21 are fixed on the side plates on one or both sides of the upper plate, connected to other components through flexible wires 14, 15, 25, ensuring the stability of the circuit board and the operation of the sensor. The control board one 20 and the control board two 21 are connected to other components through flexible wires 14, 15, ensuring the stability and reliability of the circuit. In this way, not only the stability of the overall structure is improved, but also the effective connection and functional coordination between components are guaranteed. Through this arrangement, the structure of the fixing part 18 is more compact, the circuit board is well fixed and protected, and it is helpful for the stable operation of the whole camera system. The pressing plate 10 and the hexagonal screw 11 are used to firmly fix each component together, increasing the overall structural strength and stability. The screw 12 is used to fix the sealing cover 3 and the sealing cavity shell 2, ensuring the stability of the structure. The copper column 13 is used to support and isolate the circuit board, ensuring the stability and safety of the circuit board in the shell. The flexible wire one 14 and the flexible wire two 15 are used to connect the control board and the sensor, ensuring the stability and reliability of signal transmission. The pressing block 16 is used to fix the flexible wire, preventing it from moving or falling off. The cross screw 19 is used to fix the internal components, providing additional structural support. The support column 22 is used to support the internal components, increasing the stability of the structure. The loudspeaker 23 is used for audio output, providing voice prompts or other audio information. The flexible wire three 25 is used to connect other internal components, ensuring the stability and reliability of signal transmission.

[0045] As shown in Figure 7, the second sensor 30 adjusts its up-down position through the adjusting structure, thereby realizing the relative position adjustment with the first sensor 31, so as to carry out accurate focusing. The adjusting structure includes a lower slider 27 with a first inclined surface and an upper slider 29 with a second inclined surface. The lower slider 27 is threadedly connected with one end of the adjusting screw 26, and by rotating the adjusting screw 26, the lower slider 27 is pushed to move along the thread, so that the upper slider 29 is passively moved along the first inclined surface of the lower slider 27. The second sensor 30 is fixed on the second plate body, and the two ends of the second plate body are connected with the upper slider 29 through guide columns. This connection mode enables the second sensor 30 to be accurately adjusted up and down along with the movement of the upper slider 29. This accurate adjustment mechanism ensures that the relative position of the second sensor 30 and the first sensor 31 can be finely adjusted as needed, so as to realize the purpose that the light-sensitive components on the first sensor 31 and the second sensor 30 of the double sensors are in the same focal plane. By controlling the position change of the lower slider 27 through the adjusting screw 26, the upper slider 29 is moved under the driving of the lower slider 27, realizing the up-down position adjustment of the second sensor 30. This focusing mechanism ensures the synchronous work of the two sensors, optimizes the focal length and imaging effect, and improves the image quality and observation accuracy. In addition, the sealed cavity shell 2 is provided with a notch 9, a flange sleeve for fixing the adjusting screw 26 is arranged in the notch 9, the other end of the adjusting screw 26 is connected with the adjusting hand wheel 8, and the notch 9 is provided with a sealing ring. This design ensures the stability and sealing of the adjusting mechanism, further improving the reliability of the equipment. The design of the sealing ring prevents dust and moisture in the external environment from entering the cavity, thereby protecting the normal work of the sensor and the adjusting mechanism. The sealed cavity shell 2 is connected with the plane ring 4 through fastening, ensuring the stability and reliability of the whole structure, and further improving the service life of the camera in different working environments. The design of fastening connection provides firm mechanical support, so that the camera can remain stable during operation, avoiding the influence of vibration or impact on the imaging quality.

[0046] One side of the refrigerating device 28 is in contact with the circuit board of the first sensor 31 through a silica gel pad, which is used to provide refrigeration for the first sensor 31. The other side of the refrigerating device 28 is in contact with the heat sink 7, which effectively dissipates heat, thereby improving the heat dissipation efficiency, ensuring the work of the sensor in a low-temperature environment, reducing the influence of thermal noise, and further improving the image quality.

[0047] As shown in Figure 8, in the internal structure of the present disclosure, the first sensor 31 is provided with a dust cover 32, which avoids the influence of environmental dust on the sensor and further improves the clarity and quality of the image. The sealing cavity shell 2 is filled with dry gas to prevent the influence of humidity and condensation on the performance of the sensor and the quality of the image, and to ensure the stable work of the sensor in a dry and low-temperature environment. The main function of the dust cover 32 is to protect the first sensor 31 from the influence of dust and particulate matter in the environment, so as to ensure the normal work of the sensor and improve the clarity and quality of the image. Specifically, the dust cover 32 has the following functions:

[0048] Prevent dust accumulation: the dust cover 32 effectively blocks the dust and particulate matter in the external environment from entering the surface of the sensor, preventing dust from accumulating on the surface of the sensor. Dust accumulation can cause the sensor to image unclearly, affecting the quality of the image. The dust cover 32 can keep the surface of the sensor clean and ensure that the captured image is clear and flawless.

[0049] Protect the sensor: the dust cover 32 acts as a protective barrier for the first sensor 31, protecting the sensor from external physical damage such as accidental impact or scratching. This can prolong the service life of the sensor and ensure its long-term stable work.

[0050] Maintain optical performance: the cleanliness of the sensor surface directly affects its optical performance. The dust cover 32 ensures that the surface of the sensor is free of dust and impurities, allowing the sensor to capture light in the best state and generate high-quality images. Any dust or impurities will affect the propagation path of light, resulting in a decrease in image quality.

[0051] Sealed environment: the dust cover 32 works together with the sealing cavity shell 2 to form a relatively sealed environment, further preventing external pollutants from entering the sensor area. The sealing cavity shell 2 is filled with dry gas to prevent the influence of humidity and condensation on the performance of the sensor and the quality of the image, and to ensure the stable work of the sensor in a dry and low-temperature environment.

[0052] In summary, the design of fixing the fan on the upper panel by the fixing member and the soft glue nail effectively reduces the vibration generated by the fan during operation; the heat dissipation fins arranged on the sides of the first sensor and the second sensor, and the contact design of the refrigerating device and the heat dissipation fins ensure effective heat dissipation of the sensors during operation; the first sensor is arranged in the sealed cavity shell, the sealed cavity shell is provided with a window piece and a heating piece, and the sealed cavity shell is filled with dry gas, thereby preventing the influence of humidity and condensation on the performance and image quality of the sensor. Through the precise design and coordinated work of various components, high-quality and stable astronomical image shooting is realized. The precise adjustment of the second sensor is realized through the adjusting structure, so that the photosensitive components of the first sensor and the second sensor are on the same focal plane. The overall structure design ensures that the disclosure has been significantly improved in terms of heat dissipation, dust prevention, stability, and sensor position adjustment, effectively improves the overall performance of the dual-sensor astronomical camera, and is suitable for higher precision astronomical observation tasks. The above shows and describes the basic principles, main features and advantages of the disclosure.

[0053] Those skilled in the art should understand that the disclosure is not limited by the above embodiments, the above embodiments and descriptions described in the specification are only preferred examples of the disclosure, and are not intended to limit the disclosure. Without departing from the spirit and scope of the disclosure, various changes and improvements can be made to the disclosure, and these changes and improvements all fall within the scope of the claimed disclosure. The scope of protection of the disclosure is defined by the appended claims and their equivalents. Industrial applicability

[0054] With the above scheme, one side of the refrigerating device is in contact with the circuit board of the first sensor through the silica gel pad, and the other side is in contact with the heat dissipation fin, ensuring effective heat dissipation and shock absorption. The fixing member includes an upper panel and a side plate, and the fan is fixed on the upper panel by a soft glue nail to reduce vibration during operation. The second sensor adjusts the up-down position through the adjusting structure, and the adjusting structure includes a lower sliding block and an upper sliding block. The rotation of the adjusting screw makes the upper sliding block move along the inclined surface of the lower sliding block, realizing the accurate adjustment of the relative position of the second sensor and the first sensor, so that the photosensitive components of the two sensors are on the same focal plane, and the focal length and imaging effect are optimized.

Claims

1. A dual-sensor astro camera comprising a first sensor for taking images and a second sensor for guiding stars, characterized in that, Also include: A heat sink, the heat sink is provided on one side of the first sensor and second sensor; A fixed part, the fixed part is installed on the outside of the heat sink, the fixed part includes an upper panel, a fan is fixed on the upper panel.

2. A dual-sensor astronomical camera according to claim 1, wherein, The fan is fixed on the upper panel by soft glue nails; the side plate on one side or both sides of the upper panel is fixed with a circuit board.

3. A dual-sensor astrocam as claimed in claim 1 or 2, wherein, The upper panel is provided with a hollow structure, and the hollow structure is used for embedding the fan.

4. A dual-sensor astrocam as claimed in any one of claims 1 to 3, wherein, The first sensor is provided with a dust cover.

5. A dual-sensor astrocam as claimed in any one of claims 1 to 4, wherein, Also include a refrigerator, one side of the refrigerator is used to provide cooling for the first sensor, and the other side is in contact with the heat sink.

6. A dual-sensor astronomical camera according to claim 5, wherein, One side of the refrigerator is in contact with the first plate body carrying the first sensor through the silica gel pad.

7. A dual-sensor astrocam as claimed in any one of claims 1 to 6, wherein, The first sensor is arranged in the sealed cavity shell.

8. A dual-sensor astrocam as claimed in any one of claims 1 to 7, wherein, The second sensor adjusts the up and down position of the second sensor through the adjusting structure; The adjusting structure includes, The lower slider with the first inclined surface and the upper slider with the second inclined surface, the lower slider is threadedly connected with one end of the adjusting screw, and the lower slider is pushed to move under the action of the adjusting screw, so that the upper slider is passively moved along the first inclined surface of the lower slider through the second inclined surface. The second sensor is arranged on the second plate body, and the two ends of the second plate body are connected with the upper slider through the guide column.

9. A dual-sensor astronomical camera according to claim 7, wherein, The sealed cavity shell is provided with a window piece, and the window piece is provided with a heating sheet.

10. A dual-sensor astrocam as claimed in claim 7 or 9, wherein, The sealed cavity shell is filled with dry gas.

11. A dual-sensor astronomical camera according to claim 5, wherein, The refrigerator is in contact with the first sensor through the heat-conducting material.

12. A dual-sensor astronomical camera according to claim 5, wherein, The sealed cavity shell is provided with a notch, a flange sleeve for fixing the adjusting screw is arranged in the notch, the other end of the adjusting screw is connected with an adjusting hand wheel, and a sealing ring is arranged at the position of the notch.

13. A dual-sensor astrocam as claimed in claim 7 or 9, wherein, The sealed cavity shell is connected with the plane ring through fastening.

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