Comet stacking?

[Swoop1]

Comets are a mobile object but are they mobile enough that it would preclude stacking 30 second subs?

On my set up, each 30 second sub is a minutes worth of camera time- 30 seconds data capture and 30 seconds data writing.

If I took 10 minutes worth of data (10 subs) would there be enough movement in the target to have a noticeable effect on the finished stack?

[michael8554]

Every comet has a different trajectory, which means some move much faster than others.

Deep Sky Stacker can either stack the comet, giving star trails, or stack the comet AND the stars, so no star trail.

Last night I did just that with 2 minute exposures at 1280mm Focal Length of Comet ATLAS.

Michael

[Xplode]

2 hours ago, Swoop1 said:

Comets are a mobile object but are they mobile enough that it would preclude stacking 30 second subs?

On my set up, each 30 second sub is a minutes worth of camera time- 30 seconds data capture and 30 seconds data writing.

If I took 10 minutes worth of data (10 subs) would there be enough movement in the target to have a noticeable effect on the finished stack?

Which camera do you have? 30 seconds for writing data sounds like a lot....sounds like you have a DSLR and have dark subraction enabled in the camera?

[Swoop1]

20 hours ago, Xplode said:

Which camera do you have? 30 seconds for writing data sounds like a lot....sounds like you have a DSLR and have dark subraction enabled in the camera?

I use a Sony a6300 mirrorless. I also have it set to record RAW and JPEG.

[Xplode]

Check if long term noise reduction is set to on of off, it should be off.

[Swoop1]

On 22/04/2020 at 23:06, Xplode said:

Check if long term noise reduction is set to on of off, it should be off.

Thanks- I'll check.

[Swoop1]

@Xplode- I adjusted the camera settings last night and the write time reduced significantly. Just about to upload and process to see what effect it has had onn the data.

Thanks for the advice

Matt