narrowband filters advice(minimum req)

[iwols]

hi all very new to narrowband imaging and just wondered what the minimum filters i would need,already have a ha filter,what else would i need at the minimum thanks(due to lack of darkness re rgb)

[carastro]

It's best to keep to the same brand of filters, and get the smallest nm bandwidth you can afford.  I would not recommend getting anything like 35nm.  I use Baader Ha 7nm, Oiii 8.5nm and Sii 8nm.  I also purchased a Baader 3.5nm Ha but am waiting for the Oiii 3nm to become available - 3nm are much more expensive.

The minimum you would need initially is an Oiii filter as you can do bicolour on a lot of targets, like the Veil for instance.  You can get the Sii later if budget dictates, so you can then do Hubble palette.

Carole 

 

Edited June 25, 2020 by carastro

[iwols]

21 minutes ago, carastro said:

It's best to keep to the same brand of filters, and get the smallest nm bandwidth you can afford.  I would not recommend getting anything like 35nm.  I use Baader Ha 7nm, Oiii 8.5nm and Sii 8nm.  I also purchased a Baader 3.5nm Ha but am waiting for the Oiii 3nm to become available - 3nm are much more expensive.

The minimum you would need initially is an Oiii filter as you can do bicolour on a lot of targets, like the Veil for instance.  You can get the Sii later if budget dictates, so you can then do Hubble palette.

Carole 

 

Thanks I think my ha IS A BAADER 7nm in the wheel at the minute just looking at a oiii filter one is explorer scientificand one zwo  at 7nm any prefs cheers

Or baader at 8.5

Edited June 25, 2020 by iwols

[carastro]

Baader 8.5, as said best to keep to the same brand.  

Carole 

[Wyvernp]

19 minutes ago, carastro said:

Baader 8.5, as said best to keep to the same brand.  

Carole 

I'd definitely second this, I have mismatched filters and it causes no end of focus issues when switching. Now I'm going to have to spend a load more money on replacing the mismatched ones.

Although Baader filters are as scarse rocking horse poo at the moment. 

Edited June 25, 2020 by Wyvernp

[carastro]

Quote

Baader filters are as scarse rocking horse poo at the moment. 

Well once I get my 3nm Oiii I might be up for selling my 8.5nm 1.25" Baader filter, but how long is a piece of string?

Carole 

[Wyvernp]

1 minute ago, carastro said:

Well once I get my 3nm Oiii I might be up for selling my 8.5nm 1.25" Baader filter, but how long is a piece of string?

Carole 

Twice the distance from the middle to the end 😛

I have ended up going for the Antlia 3.5nm range. Decent pricing and the results are really good. I Should mention that I went for the 36mm ones as it gives me options if I want to upgrade my scope/camera however these seem even rarer than the others.