Is the choice of LRGB filters brand/quality as critical as SHO filters?

[oymd]

I have been imaging OSC for the past 2 years, and I am putting together a Mono setup, as I think it will suit better my LP skies.

I have done a lot of reading, and plan to buy the 2600MM Pro.

I have just bought a set of very expensive 2" 3nm Antlia Pro SHO filters.

I have yet to buy an LRGB set.

From my reading, the SHO filter choice is critical, especially OIII, as there are issues with halos etc, bar Chroma and Astrodons.

With regards to LRGB, is it equally important to buy the best I can afford, or is LRGB forgiving, as opposed to SHO?

I am thinking of going with a ZWO 2" LRGB set, which is the cheapest, if it does not really matter that much?

Many thanks.

[tomato]

I would have thought that given the nature of Broadband imaging in that the luminance channel is the broadest spectral range, and the most important with respect to capturing detail, it isn't necessary to pay out for the most expensive filters. There are many fine examples of broadband images captured with the colour versions of the IMX571 sensor, and they are relying on the Bayer matrix filter. For my mono setup I personally went for a set of Baader LRGB filters, but that was before ZWO began offering filters.

As you point out, it is a very different story for NB imaging, so I think you have made the right choice in going for high end filters.

[DaveS]

If you're not going with the Antlia LRGB to match the NB, then I see little reason for not going with the Baader set.

Another discussion here:

 

Edited June 13, 2022 by DaveS

[ollypenrice]

I'm happy with the Baader LRGB set and I'm very fussy...

Olly

[oymd]

The box says m48x0.75mm??

Is it possible that they are just 0.75mm thick?

 

Edited June 13, 2022 by oymd

[The Lazy Astronomer]

9 minutes ago, oymd said:

The box says m48x0.75mm??

Is it possible that they are just 0.75mm thick?

 

I think the 0.75 refers to the pitch of the thread

[VectorQuantity]

17 minutes ago, oymd said:

The box says m48x0.75mm??

Is it possible that they are just 0.75mm thick?

 

That's just the thread size.

Dimension of mine: from top of filter surround to filter plate i.e. height above filter plate = 3.75mm

[oymd]

I see. Silly me. Yes. They are 2mm. 
 

Guess I will go with the Antlia V LRGB. 

The Baader ones are a bit cheaper, but not in stock at FLO or anywhere else. 

[newbie alert]

Narrowband filters aim for specific transmission lines with tight bandwidths throughout the spectral range , broadband don't... Look at cuivs latest video to see the difference between the baader, astrodon transmission peak and the Antlia..... 

The thing to have in mind is the thickness difference if you mix and match as I presume they're be in the same filterwheel 

[carastro]

I wouldn’t say it is critical.  Only issue would be they won’t be parfocal with the narrowband filters.   Does that really matter especially if you use an autofocuser?  
 

Carole

[wimvb]

Many RGB filters have an overlap in B and G that approximately coincides with the Oiii emission line. They also have a gap between G and R that coincides with the emission spectra of Hg and Na lights. Good RGB filters can therefore reduce some of the traditional light pollution. To further reduce LP effects you can create synthetic Luminance masters from the R, G, and B masters. The advantage of RGB imaging over osc is that you can get ”cleaner” colours. But this is of course very much affected by ones processing skills.

[Pitch Black Skies]

On 13/06/2022 at 20:41, oymd said:

The Baader ones are a bit cheaper, but not in stock at FLO or anywhere else. 

I know someone who is selling the 2" LRGB Baader ones. He is selling a 2" filter wheel too.

[oymd]

3 minutes ago, Pitch Black Skies said:

I know someone who is selling the 2" LRGB Baader ones. He is selling a 2" filter wheel too.

Is it the ZWO filter wheel?

[Pitch Black Skies]

Yes, but the 5 position one.