Are these RGB filters worth a punt?

[Space Cowboy]

Just wondering about trying these as a starter set for RGB Planetary imaging. Just want to dip my toe into this strange scary imaging technique before spending big money on filters.

Cheap rubbish or worth a shot?

http://www.opticstar.com/Run/Astronomy/Astro-Accessories-Imagers-Opticstar.asp?p=0_10_5_0_3_125

and this filter wheel?

http://www.opticstar.com/Run/Astronomy/Astro-Accessories-Imagers-Opticstar.asp?p=0_10_5_0_3_300

[Grotemobile]

Opticstar are ptetty good.For a £100, i think

it would be a good investment.A lot of work, is

involved, in RGB imaging.Unless you can find a

second hand set up.Give it a punt.Have fun.

Steve

[Freddie]

Stuart, no experience of those filters or wheel, but Opticstar are fine, I bought my 190 from them.

I doubt they are parfocal at that price so that's going to complicate things and I can't help but feel you will want to get a better quality set pretty soon, so this could just end up as money wasted.

[Space Cowboy]

Thanks Steve!

I know what you mean Freddie but I'm too wary to want to spend a lot at this stage. As I understand it even parfocals need some focus tweaking too?

[JamesF]

I know what you mean Freddie but I'm too wary to want to spend a lot at this stage. As I understand it even parfocals need some focus tweaking too?

There was a discussion in another thread recently about the Baader LRGB imaging filters. I seem to recall the outcome was that people didn't find the need to refocus unless imaging at exceptionally fast focal ratios. I think for planetary imaging then a properly parfocal set of filters probably wouldn't need adjustment at all.

James

[Space Cowboy]

Thanks James!

[Freddie]

I have the Baader filters and they don't need any focus adjustent between any of the filters either on my MN190 (F5.26) or CPC (F40). A bit more expensive, but worth it in the long run.

[Space Cowboy]

Thanks for the feedback Freddie!