Celestron Origin 6" RASA F2.2+換前面 Origin-678C Camera

[peter]

有人說可換camera

[peter]

Origin’s built-in Raspberry Pi 4 computer handles everything, from slewing (moving the telescope) and alignment to focusing and capturing images. You control it all through the Celestron Origin App, which connects wirelessly to the telescope. The app includes an easy-to-use planetarium view and suggests the best targets based on your location and the time. Just use any phone or tablet running iOS 16 or Android 12 or higher. 

Dual Cooling Fans for Performance Stability


    Optical Design: Rowe-Ackermann Schmidt Astrograph (RASA)
    Aperture: 152 mm (6") Focal Length: 335 mm
    Focal Ratio: f/2.2
    Optical Coatings: StarBright XLT
    Imaging Sensor: Sony IMX178LQJ color CMOS, Back-illuminated
    Pixel Size: 2.4 µm x 2.4 µm
    Sensor Size: 8.92 mm diagonal
    Resolution: 3096 x 2080 (6.44 MP)
    Field of View: 1.27° x 0.85°
    Filter Drawer: Integrated, Supports 1.25" and 2" filters
    Onboard Computer: Raspberry Pi 4 Model B
    Mount Type: Computerized GoTo Alt-Azimuth
    Autofocus: Electronic (manual override via app)
    Dew Prevention: Integrated Heater with Sensor + Dew Shield
    Cooling Fans: 2 (optics and electronics)
    Battery: 97.9 Wh LiFePO4 (6+ Hrs Runtime)
    Power Input: 12V DC Adapter (included)
    Connectivity: Wi-Fi, USB-A (x3), Ethernet, Aux ports (x6)
    App Requirements: iOS 16+ or Android 12+
    Weight (Total System): 41.6 lb (18.9kg)
    Dimensions (Assembled): 24" L x 26" W x 48" H (61 cm x 66 cm x 122 cm)

[peter]

摔到了

[peter]

Origin Mark II Announced today

https://www.facebook.com/photo.php?fbid=25590538213881755&set=p.25590538213881755&type=3

Origin-678C Camera  

U$499

https://www.youtube.com/watch?app=desktop&v=xLFcTAQxEzw&fbclid=IwY2xjawNdJRJleHRuA2FlbQIxMQBicmlkETFLUWhKRDJNaEdrZUhnYmxHAR6PiXhXxr3oSNIeCeO52wxOCTUg8YTyU3wm3AuRbqJGTRkIxYOl4RJHzfBbIQ_aem_a1wGEOyFgaH39isDkg3GRw


Sony STARVIS IMX178 color CMOS sensor 可換  678C Sony Starvis 2 CMOS



IMX678 和IMX178 都是Sony 製造的CMOS 影像感測器，但存在差異：IMX678 是一款較新的8.4MP 感測器，特別強調低功耗和高靈敏度 , IMX678 no amp glow , 至於 IMX178  amp glow 可透過 dark補救.

IMX178:  old sensor , size 1/1.8"   6.4MP   pixel size 2.4um
IMX678:  new sensor , sensor 1/1.8"   8.4MP (4K)   pixel size 2um  


https://www.mobile01.com/topicdetail.php?f=621&t=6711263

目前常用的 IMX415 感光能力基本上在 Starvis2 家族前只能說是 長江後浪推前浪
Starvis2 監視器產品線目前有
1/1.2" IMX585 這顆太大顆 行車紀錄器應該沒機會用 鏡頭成本都太高了
1/1.8" IMX678 Viofo A139 Pro 已經推出產品
1/2.8" IMX675 4M 的有機會取代目前大量使用的 IMX335 感光能力翻好幾倍
1/2.8" IMX662 2M 日本廠商 Comtec行車紀錄器ZDR045採用 適合星光夜視場合


總結目前市面上商品化的 4K感光元件如下：
1.IMX415 使用量最大 (小米 70Mai A800等)
2.OV OS08A10 (Mio 887等)
3.IMX334 (Thinkware U1000)
4.IMX678 Starvis2 (Viofo A139 Pro)
5.IMX317 (Viofo A129 Pro 4K)

性能排名：
IMX678 >>>> OS08A10 >> IMX334 >> IMX415 > IMX317(DC向)

[peter]

https://www.facebook.com/photo/?fbid=25582000471388099&set=pcb.1791983554778267
https://www.facebook.com/photo?fbid=25582000444721435&set=pcb.1791983554778267

[peter]

在 Reddit 等用戶討論中，有人問「能否將 DSLR（如 Nikon Z9）接在 Origin」時，有回覆指出：

“I have a celestron origin, but looking to run … Nikon Z9 … Is this possible?”
回覆：「Not the origin. I wish I could run the Z9 on the origin but the camera attaches to the top of the telescope and the z9 is a bit bulky.”
Reddit

這也反映了非官方、自由更換感測元件時會有尺寸／安裝／整合性困難。

官方也在 FAQ 中寫道：「Can I use the Origin optical tube on another Celestron mount? No, the Origin optical tube only works with the Origin mount at this time.」
celestron.com
 同理，感測器／相機模塊的更換也可能受到「只為該系統設計」的限制。


可以升級／更換為官方支援的相機模組版本：例如官方推出的「678C Camera 升級套件」。這樣做風險較低、支援較好。

不建議或難以支持隨意更換感測器為第三方／非原廠規格的大型相機（如 DSLR、專業冷卻厂 CMOS），原因包括：

安裝結構（機械接口）可能不適配。

焦平面、感測器尺寸可能與原設計不匹配，影響影像質量或造成致命誤差。

韌體／軟體流程可能不支援你所換的感測器。

校正流程（flat frames、偏置、暗場）需重新做且可能引入更多難度。

若你願意自己動手、進行改裝（custom mod），技術上或許可行，但你必須接受：保固可能失效、支援難、改裝難度／成本高、可能得自己處理驅動／冷卻／對焦等問題。

[peter]

If I bought the Celestron Rasa 6 is it possible to turn it into an Origin Clone or close to it?
 

https://www.cloudynights.com/forums/topic/983709-could-a-celestron-rasa-6%E2%80%9D-be-cloned-to-an-origin/

[peter]

有人問題的

Problem solved! Some may remember my post on excessive play in the altitude axis - approx. 0.3 degrees or 1000arcsec in my case, but this seems to vary a lot between units and may not be present at all in your mount. But if present this can lead to substantial drift of the field of view during long acquisitions and potentially severe problems when the Origin is used with an autoguider.

Standard measure to reduce these problems is to imbalance the optical tube somewhat to always keep it in a defined position on one side of the slack, i.e. to pre-charge the gear with some torque. But the imbalance leads to torque that varies with altitude angle and completely fails to charge the gear at high altitudes. To be efficient at higher altitude a lot of imbalance is required which can lead to other problems with guiding and with the mount. Also, the varying torque lets the tube sit at slightly different positions within the play and does not completely eliminate the problem.

What we need is a constant torque, constantly charging the gear in the same way. Therefore, in high precision mechanics it is standard to charge gears with springs, because some play is always present. I do not know why this is not done in the Celestron mounts, or why, perhaps, these springs are missing in some units.

But there is a simple solution. I have now provided constant charge to the gear by attaching a weight to a thin rope that is winded around the axis, see pictures. That way the torque is constant, no matter where the tube is pointing.

A weight of 750 grams seems to be  optimal. It is sufficient to always have the tube in a defined position and small enough to not result in excessive wear of the gear or any other problem with the mount. In a horizontal position the torque produced by it corresponds to the torque that comes from taking the lens cap off, if the tube has been balanced with the cap on, so its actually very little. But it is constant and completely eliminates the problem for me!