Will this work to capture star light at night? I am trying to build an All Sky camera to view the stars.

I had previously answered this from the standpoint of trying to achieve good framerates while still managing to capture stars, and had reported that of course this is pretty much impossible. These particular cameras do not force high amplification, so unlike the ELP 1080P FHD01 USB cameras, you can't get high framerate motion in low light at the cost of high noise. With these OV5647 Arducam boards, you have to drive the framerate very low, costing you pretty much all sense of motion in the scene (except for where streaks are considered acceptable) but you can in fact collect fairly decent starlight. I only figured this out in the last day so that's why I didn't mention it before. It's not like using a good DSLR because the gain is low on these, but.... if you pass THIS to the camera, you can do some pretty interesting things for astro applications:raspistill -q 100 -w 2592 -h 1891 -ISO 3200 -ss 5000000 -ex sports -t 10000 -o longexp.jpg-q drives the image quality to 100%-w and -h specify the capture resolution.2592 x 1944 maxes this camera out, important for pinpoints like stars. I used 1891 for the height to push it to wider aspect but still avoiding the zoom in effect that happens at wider angle aspects. Try 1920x1080 to see what I mean.-ISO 3200 tells it to push the gain on the camera all the way. This is a bit past the specs of the cam to make sure it milks everything it can get.-ss specifies framerate in microseconds. I played with this value A LOT under dark sky tests and found that 5,000,000 microseconds was pretty much the max limit.-ex sports sets the capture to "sports mode", which is suprisingly important. It pushes performance out of the camera like none of the other modes can.-t 10000 forces the camera to time out and take the picture after ten seconds. I found that I could eliminate this and do fine. Increasing it does nothing for me.-o of course specifies the output filenameUsing this you'll get some noise but quite a lot of stars in capture, and since it's quite long, it's good for meteor trails as long as they are reasonably bright. The NOIR version of the cam really helps with that since it picks up on very hot objects especially well.

a direct replacement to the Pi v2 camera? (dimensions are different, but the Jetson Nano requires the v2 sensor, yet I want telephoto)

We can meet your needs but that is not for sale on Amazon and please contact Arducam sales representative at info@arducam.com

Is the included lens wider angle than the camera with no lens? Does anyone know the field of view?

Horizontal Field of view: 84 degrees Vertical Field of view: 63 degrees Diagonal Field of view: 105 degrees Without the lens it is just a sensor, so you won't have a focused image. The camera module is useless without a lens.

ASIN	B013JTY8WY
Antenna Location	Close-up shots, long distance focus, panoramic views
Are Batteries Included	No
Best Sellers Rank	#2,337 in Single Board Computers (Computers & Accessories)
Brand	Arducam
Built-In Media	Camera Body, USB Cable
Camcorder Type	Video Camera
Color	M12 Lens Camera for Raspberry Pi
Compatible Devices	Raspberry Pi
Compatible Processors	Raspberry Pi processors
Connectivity Technology	USB
Customer Reviews	4.2 out of 5 stars 313 Reviews
Display Resolution Maximum	1920x1080 (1080p Full HD)
Effective Still Resolution	5 MP
Exposure Control Type	Manual
Features	Interchangeable Lens, Time Lapse
File Format	JPEG
Flash Memory Speed Class	C10
Flash Memory Type	SD
Flash Memory Video Speed Class	V30
Focus Type	Manual Focus
Form Factor	Module
Has Image Stabilization	No
Image Aspect Ratio	16:9
Image stabilization	Optical
Lens Type	Fisheye
Manufacturer	Arducam
Maximum Aperture	30 f
Maximum Focal Length	36 Millimeters
Minimum Aperture	0.03 Millimeters
Minimum Focal Length	4 Millimeters
Model Name	B0031
Model Number	B0031
Operating System	Linux
Photo Sensor Size	1/4 inch
Photo Sensor Technology	CMOS
Screen Size	2 Inches
Sensor Type	CMOS
Shooting Modes	Time Lapse
Style Name	Minimalist
Supported Image Format	JPEG
UPC	714119484438
Video Capture Format	MP4
Video Capture Resolution	1080p
Video Resolution	1080p
Viewing Angle	56 Degrees
Warranty Description	6 months
Water Resistance Level	Not Water Resistant
White Balance Settings	Auto
Wireless Compability	Infrared
Zoom	Optical

Arducam 5MP OV5647 Camera Module with M12 Lens for Raspberry Pi, 1080p Video, 5MP Photos, Interchangeable Lens, Compatible with Pi A/B/B+/2/3/3B+

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