8th filter for ZWO 8 filter wheel

[Venter]

Hi there, I have the ZWO 8 filter wheel (using 31mm). My camera is the ZWO 1600 mm Pro, with a Skywatcher Esprit 100ED. I image mainly from bottle 8/9 skies (North Sydney).

Current ZWO filters used are L, R, G, B and Ha, SII and OIII (the narrowband is all 7nm).

This begs the question as to what to do with the 8th filter? I’ve thought of either Hb, or Ha (3 or 5nm) but not sure if these will really add to my imaging or if there are other options? I could of course just leave it vacant!

Suggestions welcome.

[AstroJunk]

Black to take darks as part of your sequencing.

[JA]

You could try Infrared

Best
JA

[DarwinAstro]

Oiii - 3nm. expensive? Yup!!! Worth it? Absolutely.

[Venter]

Great, thanks! I’be often thought about it so may just give it a go

[Stonius]

Or an R+IR to incorporate into an LRG sequence?


UV I wouldn't bother with unless you're doing planetary shots of Venus.


Markus

[billdan]

I think Colin (Atmos) has a Nitrogen NII filter centred on 658.4nm.

However to take advantage of it you would need to replace your 7nm Ha filter (as it already picks up NII as well as Ha) with a 3nm filter.

[Venter]

Lot’s to think about….thanks all!