Light path with two filter wheels

[NickH]

Quick question

ED80 at F7.5 connected to Atik 314L (sony ICX285 sensor)

Currently I have one motorized Atik FW (1.25") in the light path, effectivley as close to the sensor as possible...I wantt o add another one in from of it...reason, FW 2 will be narrowband, FW1 will be LRGB and a space for when I want to just use FW2..

Assuming again that FW2 and FW2 are mated pretty closely, can you foresee any issues, bearing in mind the sensor size..

Rationale is to not have to go outside much at all to manage the setup (barring roof roolback) and not wanting to swap wheels for different jobs and have to redo flats etc...

They will be on different laptops, as you currently cannot run two Atik EFW-USB's from one (tried that for the Spain project)

TIA

[Merlin66]

Nick,

If you can get the back focus distance should work OK.

Just watch out for added reflections and vignetting.

[NickH]

Back focus is fine, I know that...vignetting is the issue i was most worried about..