I took the Ultima 8 outside and set it down flat on a workbench in the yard. Worked just like a Dob, only with slow motion controls. I attached the dew shield...

Ref: http://physicstoday.org/vol-57/iss-3/p29.html Hubble Sacrificed in Wake of President Bush's New Space Vision The Hubble Space Telescope has been...

Ok so I have done some thinking and a little measuring of my car. Now a 10" dob will fit with little room to spare, but a 8" will fit a lot better. What I need...

I'm going to NEAF for the first time and heard that there are sometimes pretty good deals on eyepieces. I was thinking about getting a decent mid power EP...

I just received my 21" Sharpton SCT earlier this week and finally had a chance to try it out last night. The ultra light weight of this scope at 43 pounds for...

When I collimate on one side of focus and then go to the other side of focus, it's out of collimation. When I then re-collimate on this side of focus and then...

The relative surface gravities of the earth and mars respectively are 1.000 and 0.380. Let that of the earth be g_e and that of mars be...

Equipment: Orion Optics Europa 250 Newt ('Mini-Hubble') (250mm, f4.8) on HEQ5 mount, 10x50 bins. Conditions: Initially clear, steady. Wind from the west, slow....

I wonder if anyone can sympathize with this. I'm intermediate level and do a lot of deep sky observing (starhopping, no photography). Sometimes when making...

I'm looking for some comments from Coronado Maxscope users. Which would you prefer - a double-stacked 40mm or a single 60mm? Obviously the image of the Sun in...

I'm considering this scope off Astromart, for sale by someone within easy driving distance. He's asking $750, which seems a little high for a scope that sells...

Hello everyone. Just a bit of the story. Pretty amazing here in San Diego. This morning again I can smell the smoke as I write this. They are saying over...

"Doink" wrote in message ... I am a little confused about something. I've seen posts about...

Part soapbox, part question... Having blown so much "initial telescope budget" on five Naglers, it's heartening to see them top every comparison or review...

Seems this guy is a school teacher. During the school year he is available on the weekends and holidays. He's also available all summer. He will come to your...

Hi all. If we make a lense shape bottle with clean water inside is it working as lense ? 30 or 50 inches lets say ?

Tonight I will dream the strangest dreams. I will say not "I am" but "I am yours" For otherwise the statement is merely axiomatic. Tonight I will dream the...

Just wanted to get your opinion on a couple of different scopes. I currently have a 12.5 dob and a 4" Vixen achromat that I use for lunar, planetary and...

If you open the high res color panorama from Opportunity and scroll the image until you are looking at a point about 60% of the way from the left to the right...

does anybody have any confirmation of when is the Meade LXD75 series shipping ? Any shipments yet ? Does anybody how this thing is going to have PEC and 3 star...