32 replies to this topic

[Starman1]

Actually Narrow band filters work well for hydrogen regions of some face on external galaxies, like M33. One night another club member and I tried a narrow band and H-Beta filters on M33 through a 24" f/4. He was quite surprised at how well it worked. Of course more distant galaxies, ellipticals and edge-on spirals are not even worth the effort.

I've used one on M33.  It didn't seem to help much on M31, though.

[Mike W]

My favorite Nebula filter is a Televue Nebustar recommended and purchased a few years ago from Don, exceptional on the lagoon!

[39.1N84.5W]

Don what are you most used planetary filters? You post a lot of information on CN, thank you.

[Starman1]

Don what are you most used planetary filters? You post a lot of information on CN, thank you.

Jupiter.. Baader Moon & Sky Glow
Saturn/Mars.. Baader Contrast Booster

[MrsM75]

Thank you for the guide Sir.

 

So I got a $25 GSO 1.25 UHC Filter, it claim to be GSO but I think it a knock off since it only $25, I do not think it going to work with that price, I need to try it first.

 

So my question is I know it a nebula filter, so technically it won't work on globular clusters and galaxies right Sir?

[Starman1]

Thank you for the guide Sir.

So I got a $25 GSO 1.25 UHC Filter, it claim to be GSO but I think it a knock off since it only $25, I do not think it going to work with that price, I need to try it first.

So my question is I know it a nebula filter, so technically it won't work on globular clusters and galaxies right Sir?

Yes, it is for emission nebulae only.

[39.1N84.5W]

If I already own the Baader Semi Apo filter do I need the Contrast Booster or the Sky Glow?

[Starman1]

If I already own the Baader Semi Apo filter do I need the Contrast Booster or the Sky Glow?

It has lower transmission in the violet than the M&SG filter but is otherwise similar. I can't say exactly as I haven't directly compared them.
On Mars, the CB is going to yield better images, but otherwise, it's worth using to see if you see enhancement.