Large pixel camera

[iapa]

Hi,

I have a StellaLyra 8” RC on order. Woohoo

I was looking to see what camera would give me an imaging scale of 2-3 (Bortle 5 skies)

My calculations show I am looking at something around 10micron pixel size.

Anyone know of camera with that pixel size, but also 4Megapixel sensor or better?

[wimvb]

A 4-6 um pixel camera binned 2x2 or an osc camera in super pixel mode, should do.

[iapa]

@wimvb

I thought of that, but, still not sure about any negative issues around software binning with CMOS cameras as binning in not something I have tried before.

Should I bin images at: 

• capture
• post capture pre process
• post capture post process

My thoughts now are which gives best sampling?

 

Edited March 20, 2021 by iapa

[wimvb]

Mono: bin at capture

Osc: bin in preprocessing (super pixel debayering)

From a light polluted site, I would probably choose mono. It's easier to do both rgb and narrowband imaging. From a dark site, osc works well. You cand do nb imaging with a dual band nb filter.

[iapa]

Ta - only started looking at imaging 5yrs ago, with 3 off due long term depression.

Bortle 4/5 skies here apparently.

Have both a 1600mm cooled and 294MC cooled so, will try each over time

thanks 

Edited March 20, 2021 by iapa

[michael8554]

2 arcsec/pixel at 1600mm FL requires 16um pixels. 

3 arcsecs/pixel requires 23um pixels !!

6um is about as big as it goes with common cameras from QHY and ZWO, which gives 0.77arcsecs/pixel, or 1.54arcsecs/pixel binned.

Michael

[david_taurus83]

Why do you need such low resolution? I'm assuming you have the mount to track and guide at that focal length so why not go for around 1"?