Group Information- Members: 1697
- Category: Amateur
- Founded: Aug 29, 2000
- Language: English
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Description
This site is for all refractor users, and those interested in them, to enjoy. Discussions of equipment & observing are encouraged. Owners of all types & apertures are welcome!
Members are encouraged to post and take part in discussions as you will learn more that way. An active group is also more interesting to be a member of. Please be mindful of your fellow members when posting to the site - we all want a friendly interactive group here." Posts of a partisan political or totally non astronomical nature are not acceptable and are subject to removal.
Manufacturers, dealers and their employees are asked to identify their affiliations when posting regarding their own or competitors products.
New members messages are moderated so do not bother trying to spam here.
The Home Page photo is the Lowell Observatory refractor with which Percival Lowell did his Mars studies. 24" aperture F16.1 made in 1896 by Clark. Per an article I found the lens was refigured by Lundin at the Clark company in 1905. According to a Hartmann test result I have seen in Bell's telescope book this is one of the best lenses to ever have left the Clark factory, after the rework I presume.
Rich Wood - astronut1001 - Owner
Darren Hennig - doktorphoton - Moderator
David Sherfy - warpedcorp - Moderator
Stewart Waters - olympus_mons_observatory - Moderator
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Re: Strengths of a large refractor?
For imaging as Roland has said a high qulaity refractor gives sharper images that are more pleasing with much tighter stars. They are aklso much lighter and
Posted - Sat May 17, 2008 7:40 am
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bradgregley10
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Re: Strengths of a large refractor?
Hi Greg Well my 8" f/9 seems to pick up fine detail on surprising great amount of deep sky objects. Seen galaxies past 15th mag from a nice dark site. I also
Posted - Sat May 17, 2008 3:45 am
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Sheree Krasley
galaxyman4565
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Re: Binoculars issues
You can have odd things happen if your eye is closer to the eye lens than the exit pupil - "blackouts" over part of the field, for instance. I like nicely
Posted - Sat May 17, 2008 3:03 am
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Alan French
alandfrench
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Re: Binoculars issues
Well this has been informative. Twenty zillion binocs out there so I guess I have quite a bit to learn. I'll have to test out some larger exit pupil binos.
Posted - Sat May 17, 2008 2:53 am
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gnowellsct
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Re: Binoculars issues
Understood, thanks for confirmation.... your previous response made it sound like one would see false color in 10x binocs...
Posted - Sat May 17, 2008 2:31 am
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Bill G
bglick12
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