... Marcin, Look at the loose screw and see if it is much farther in than the others. You may need to back it out and look in the hole to see how far you can...
The best thing to do is go to a local club's star party or meeting and test drive some ten-inch or similiar sized Dobs. A ten-inch is a very powerful...
This is for SVP owners who want digital setting circles for their mount but aren't crazy about removing the R.A. encoder each time they want to use the polar...
Well I posted some results under Rome 120ST, but they were not that good. After shooting all night long and then finding you messed up on acquiring Focus...
Yea, I know. I found out how to acquire focus last night, and messed up the settings on the camera. Tracked M65 -66 and NGC3628 for three hours . The raws...
... messed up the settings on the camera. Tracked M65 -66 and NGC3628 for three hours . The raws are good but processing is another deal. I will try again...
Canon 350 XT. I did some shots like you sugest with a 3.2MP camera and well for the moon. Joe Rome - Austin, Texas ... messed up the settings on the camera....
Hello All, I remember someone asking either here or on Chinese Telescopes about the proper diameter adapter one might need to replace the focuser on the Orion...
Well with the moon, the glare of Austin's city lights, and the Airport I had one hour to shot M31 (In the photo section). Things are getting better. Joe Rome...
So last night, in what were considered "average" seeing conditions, I got my best view of Saturn ever. Using University Optics Abbe Orthos (12.5 & 9mm) I was...
Thanks for the advice on the xt 10 intelliscope. I had a follow up question. It says it has a f ratio of 4.7 while my current telescope is 8.9. People refer...
... Well it is true you will get a larger FOV (field of view) with the same eyepieces in the F/4.7, and it is more critical that it be collminated well or you...
... This is not necesarily true, it depends on the details. FOV depends on the apperent FOV in your eyepiece and the magnification. The magnification depends...
... If you have a fast scope, you have a low f ratio like f/4. In general, you will get a wider field of view for the same eyepiece focal length with the fast...
A fast telescope has a focal ratio of less than F/6, and a very fast telescope has a focal ratio of F/4 or less. In a short focal length telescope, you get a...
... This is a potentially very confusing statement. Interpreted one way, it is incorrect. Interpereted another way, it is correct. Assumptions: We are...
Neal; Choice of eyepieces is highly personal and dependent on your preferred viewing. Also choice can be dependent on whether or not you have a 2" diagonal...
Sorry, I should have been more specific in my list. The Orion 80ED comes with a 2" diagonal. I am interested in general observing and I mentioned price and...
... This is true because the scope have the same focal length, i was assuming with TWO mirrors of the SAME SIZE of differen't focal length. So yes your example...
... length. ... The f ratio or fx.x is a measure of the photographic speed and has no direct effect on field of view. But you may consider the light cone angle...
In the last message, about 4 paragraphs down, should read "it defines " not "ir defines". My lazy finger didn't want to squeeze into the t and tried to fool...
I have a 90mm Mak - it is pretty dim for anything but the planets. So I figured I need an upgrade on aperture. Can't decide whether to buy an XT8 or XT10. Some...
Nope, not true. Get the largest aperture you can afford and handle. Yes, the 10" will grab more light polution but it also grabs more starlight. If there were...
... I ... light ... and ... The statement is only true to an extent. Given the same magnification used, the bigger instrument will be brighter, with a bigger...
one other thing I forgot to mention is that magnification also plays a factor in seeing dim objects, or teasing them out of the background sky. In that case,...
... I ... light ... and ... The bigger aperature may grab more pollution, but an 8 or better 10 inch can also power light pollution filters almost as if they...
I would go with the ten-inch, because aperture always wins even from a light polluted area. I once spotted the Helix Nebula from the front yard, and that front...
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