year I put up an image of ngc 2070, my first attempt. Raymo kindly made criticism and has given me more help by private communication, many thanks Raymo.
These images are again from a Canon 60DA at prime focus of a Tak Mewlon 210.
The major problems were tracking,noise and loss of detail in reducing the image for this site.
The steps taken were:-
Guiding: went to off axis pulse guiding with an Orion thin OAG and a ZWO 120mm.
Noise : stacked 4 4 minute shots at ISO 640
Image reduction: still a a problem, these are small but at least clearer
The camera stored jpeg and raw images.
The link below gives the steps I followed to process the raw images, and the jpegs without the demosaic step.
Despite the assurances in the tutorial the colour is missing in the final raw shot
So two immediate questions.
How to produce colour in the raw processing
and
the best way to reduce images for this forum
Chris
http://northlincsastro.org/images/A%...Nebulosity.pdf