Activity Stream

Hello JG., I have been musing / brooding about that spherical aberration. I have read on a Dutch forum ( and in your own post #19) that using a...

Cold neutral hydrogen is in its ground state. In the ground state the electron and proton have anti parallel spins. Slightly above the ground state...

So when swapping a trunk, do I have to swap the trunk popping mechanism as well? Or is it simply unbolt, then rebolt? this may have been asked...

Greetings The final Apollo 11 “Flight Rules” document is available for download here: www (dot) nasa.gov/alsj/a11/A11MissRules.pdf. Cordially,...

I think it will age well, if you look at something like a 240Z and how well that has aged considering it is 50 years old. I think 20 or 30 years from...

They have an aperture of 60mm and a exit pupil at 3.25mm. The ed glass is nice, but objects will be dim compared to the Oberwerk 20x80 Deluxe III,...

The Meade StarNavigator NG 130mm, the telescope itself, is a "Bird Jones" catadioptric reflector. Of all the types of reflectors, that design is...

I haven't tried them. From the specs, they sound very interesting, I would certainly like to give them a try. But I can say the 25x100s are...

It is not often you see someone considering downsizing in aperture unless there is a good reason like physical limitations or simply wishing to have...

Hi Dan. It's always exciting to have a new member on board with us. And, as Kathy has stated, please check out the new TSS forum. Welcome to the...

As a technical writer, maybe I should re-write some manuals. I was a returner, too. It is strange how one's interests evolve over time. For the last...

Scopes? Yeah I've got scopes, lots of scopes. But binocular viewing is where it's at for me. The VAST majority of my observing is done with...

Hello JG and Bryan. A very nice pair of reports on these Sharpless targets. With these extended objects, the low surface brightness, or magnitude,...

Welcome! I'm a beginner myself and I can relate to your frustrations with trying become proficient (or at least adequate) at this hobby. Like any...

I don't know the LX200 mounts, other than that they are fork mounts. Polar aligning a fork mount is a bit tricky since there is no polar scope to...

Hi, Dan. Welcome to the forum. You might also want to check out The Sky Searchers, a.k.a. TSS, a new forum with many of the same members. ...

Unfortunately, at AF, there has only ever been one Admin: the aforementioned, missing Gus. No one else has the ability (i.e. passwords, permissions)...

Thank you John! On the web, there are some sketches of the Sh2-71 planetary nebula showing its inner donut form, but they have been made on the...

i knew something was wrong for a while, but did t think it was that bad!!,,thanks for the heads up, with all the admins no one is able to correct...

What a nice and high quality observations! JG, thanks for this excellent report of these difficult objects! And Bryan for your superb comment on it!

Hi Mick. We're all happy to have you aboard here. And, congratulations on the new Nexstar 90 SLT telescope. Welcome to the forum Mick, and the best...

You may as well forget about pictures. The site is broken, and one of the things that is broken is image uploading. Furthermore, Gus is missing and...

Hello Bryan, and thank you very much for your observing reports - a very helpful comparison! I knew that the both Sharpless will be very tough,...

Thanks for your nice report. NGC 5023 mut have been quite a victory!

Welcome to the forum Astro Greenie.

Hi Pat and Welcome. I'm a displaced Texan (from Odessa) now living and sky watching in England.

Hi IHannaford and welcome. I hope you have clearer skies then I have in North Yorkshire.

thanks Marshall if only it would be higher!! there is only so much you can do at 22deg..

Hi NMDW that looks like a very nice scope that you have. Welcome.

Hi Frogger - welcome.