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Hi Olivier,

Yes, I should say the exposure time.
The present ones were about 70 seconds per image.
I could possibly go to two minutes per image with a DSLR.
Also, I now will guide.

John

This is my latest try at Nova Del 2013-09-08.
Is it still too noisy?
My next try will be at least 30 images stacked. Have some decent weather.
I think this was 10.
Thank you,
John

Thanks Robin,

I will check both of those right now.

John

I took this on 09-03-13.
Used iota Del for instrument response.
Processed in ISIS. Not sure if it is correct.
Please comment.
John

Thank you Christian.

Excellent programs you have made.

John

I am wondering if the proper way to convert Canon CR-2 images in IRIS is to save as CFA or black and white FITS?
Thank you,
John

Thank you Ken and Robin.
John

Would it be possible to image Vega, go on to other unknown targets and later use Vega's profile in ISIS for Instrument Response on the unknown targets?
Thank you,
John

Christian,

I used the Alpy 600 at the 3mm hole + Barlow element + a DSLR.
Raw converted in Iris, bias, dark, in ISIS.
May have had trouble with using Vega as instrument response.
John

Thank you François.
John