... You probably confused him by talking about magnification when discussing an image on a computer screen. That's not a meaningful concept because it depends...
... That makes sense. I said that "some say" that a cell of a given size is not supposed to affect a scope with aperture smaller than cell size, but this is...
... That makes sense. I said that "some say" that a cell of a given size is not supposed to affect a scope with aperture smaller than cell size, but this is...
... The earlier thread referred to moving the whole eye physically off-center, while keeping it aimed at Jupiter. That moves the pupil partly off the exit ...
... Higher magnification does not improve contrast on extended objects- the object and background both get fainter by the same proportion. ... Whether Jupiter...
Good Morning Ladies and Gentlemen: I am pleased to announce the official opening of the Third Annual SCT-Users Mailing List Imaging Contest. This year's...
I can't tell you what your wavefront is, but I can tell you your collimation is off. It's quite clear that it's off the the left in the picture. Chris S ...
Hi Steve: Are you having an optical problem or are you curious? (no problem with curiosity, I'm pretty curious myself <G>) The star test and SCTs don't mix....
I enjoyed the Simpsons episode too.Now if we could just get 60 min. or 20-20 to pick up on the problem from one of us,we may have a way to get to the average...
Matt, Thank you. That's a great idea. I was considering mounting it on the pod, but I had more cordage to deal with than I wanted. I had not considered your...
The LBG in question is something like 1 arc minute by .6 arc minutes. Hardly an extended object! But I think that having only the LBG in the field of view can...
Steve, It looks very good. Did you do any images closer to focus? Some at focus on a dimmer star would be good. If you did Castor we would have an idea of the...
... or 20-20 to pick up on the problem from one of us,we may have a way to get to the average Joe.Better yet maybe my neibour would see it and change his 200...
... and the standard C8 wedge 93656 ? Would it work for an N8 GPS? ... Hi sct users.. I didnt see any replies to this post, and as I was having problems ...
We have a City street light in our back yard, and NO alley even. I believe this is due to some nice elderly folks who live behind us.. The light is so bright...
Hi folks. I realize this question is *very* challenging to answer given variations in local seeing, but would appreciate any insight anyone can offer. I...
... The traditional meaning of the phrase "extended object" means anything larger than the limit of resolution of the optical system (eyeball included), ie,...
Your view descriptions sound very similar to what I'm seeing with an 8" Ultima2000 in _average_ 'seeing' conditions, & mebbe a magnitude or so better darkness....
Hi Gary Sounds like a pretty good description of what I get in my N8 from a Boston suburb. You might want to try a star test (plenty of instructions on the...
Hi Gary, Your planetary description sounds about right. But you should be able to detect at least the STB below the GRS clearly (like it underlines the GRS)...
Steve: Actually I didn't perform the star test, the person I might buy this scope from did. I agree, it would have been good to see the images at closer to...
Hi Greg: Even at 391x [w/10mm EP(?)] you're right at 27.9x/per/inch/aperture. Until I got my Leitz Zoom EP [7.4–22mm] my favorite Planetary EP was a 9mm UO...
On top of the light is a sensor. If you zap the sensor with a laser, the light will go out, it will stay out as long as the laser is on the sensor. It does...
Point taken, but it is standard practice to boost magnification to get better contrast to see galaxies, and it usually does work, as Jay Freeman and many...
Well I don't know if I'm inch-per-aperture or absolute magnification guy. I can say that I routinely observe at higher powers now that I have a c14 usually...
I really would like to own 10mm...the Nagler is 9 or 11, I'd rather have 10, the radian 10mm looks good...any other suggestions? Oh yes a 10.5 Pentax. Now why...
Hello, For all of you folks out there who have to deal with Pines like we do in NC....... We have been doing observing programs for school groups and I have a...
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