INDI Library v1.9.8 Released (29 Sep 2022)

Bi-monthly INDI Library released with new drivers and bug fixes.

First H-alpha attempt

  • Posts: 826
  • Thank you received: 139

First H-alpha attempt was created by Alfred

Quite often I read on internet forums doing narrowband astrophotography with a one shot color (OSC) cam was nonsense. I never understood why that should be the case. Of course 3/4 of the RGGB pixels remain un-used. But nevertheless it should work.

Two days ago I took a shot at it and attached a Baader 7nm h-alpha filter to my ASI 294Pro cam. In downtown Frankfurt, a heavily light polluted area, I took 12x300s test photos of NGC 7000. This is the "raw" result, just stacked and stretched.

All green and blue pixels are still present. They add nothing but noise to the picture. Once you extract the red channel thus get rid of the green and blue noise, the result is monochrome and looks like this:

I used a TS107-S with TS Flat 2,5 (107/700) on a Losmandy G-11.
The following user(s) said Thank You: Gonzothegreat, Brian, Mohamed
Last edit: 3 years 4 weeks ago by Alfred.
3 years 4 weeks ago #42949

Please Log in or Create an account to join the conversation.

  • Posts: 1067
  • Thank you received: 137

Replied by AstroNerd on topic First H-alpha attempt

That is superb, and proof that it can be done.....and very well to.. :)
Stellarmate OS on Raspberry pi4b
Skywatcher EQ8 pro, on steel pier
Takahashi FSQ85, FS60cb & Meade 8” SCT (de-forked)
Starlight Xpress SXVR H18, SXVR M25c, Lodestar x2 Guide Camera
Pegasus Ultimate Hub V2 for all USB & Power
Pegasus focus motors on all scopes
3 years 4 weeks ago #42952

Please Log in or Create an account to join the conversation.

Moderators: OlegChristian
Time to create page: 0.229 seconds