Imaging into Twilight?

[richyrich_one]

Hi

Is it worth imaging DSOs into twilight or is it a lost cause?

Obviously you'll lose contrast but is the data, such as it is, still worth getting?

[Tim]

Desperate to maximise clear skies?

I'll sometimes finish a narrowband Ha or Sii run into early twilight, but these dense filters cut out the worst. For luminance or colour filters, or with a OSC camera I no longer bother if it isn't astronomical darkness. Better to hold out for better quality if you can, and darker skies are the answer.

[DaveS]

NB can image into twilight, the narrower the better, 3nm if you can afford them. For LRGB I wouldn't bother, the same with moonlight, which has the same effect.

My rule for (3nm) NB is:

Moonlight, Twilight, Streetlight, pick two. Since I have constant Streetlight it means either Moonlight or Twilight but not both.

YMMV

[RayD]

3 minutes ago, DaveS said:

NB can image into twilight, the narrower the better, 3nm if you can afford them. For LRGB I wouldn't bother, the same with moonlight, which has the same effect.

My rule for (3nm) NB is:

Moonlight, Twilight, Streetlight, pick two. Since I have constant Streetlight it means either Moonlight or Twilight but not both.

YMMV

I like that, one for the notebook.