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About wrvond

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    West Virginia
  1. While effective, desiccant is slow to work. In this situation my response would be to set the telescope up in a spare room and run an electric dehumidifier for a day or two. This will have the benefit of removing all the moisture from the electronics as well as the OTA.
  2. I have polar alignment scopes in two of my GEMs but don't use them. For visual, simply aligning the mount on true North and setting your latitude on the elevation guide is (essentially) the same as performing a polar alignment. I will grant that if you are using tracking motors a good polar alignment with the scope will yield better results, but if you are using GoTo, performing a three (or more) star alignment will eliminate any error.
  3. What I'm perceiving is a disconnect between when you are looking through the finder scope and when you are looking through the telescope, so I have some questions for you: 1. are you aligning your finder scope with the telescope beforehand? The center of your finder scope should be pointed at the same spot as the center of your telescope. 2. are you using any kind of tracking motors? If you are moving from the finder scope to the telescope too slowly (without tracking) the target is very likely to have transited out of the field of view of the telescope. As mentioned earlier, a 1.25" 40mm Plossl isn't going to gain you any more FOV than a 32mm Plossl, simply because of the field stop. But a 1.25" 32mm Plossl will give you a wider FOV than a 23mm. However, the FOV of the 23mm is such that you should be able to move from a finder scope to the telescope without losing the target.
  4. The scope itself is probably worth $350.00 USD more or less. The OIII filter can be expensive - is it 1.25" or 2"? That makes a big difference, not to mention condition. A camera on a Dob has no value to me. If you are wanting to do AP, you need a whole other kind of scope. The EP's are nothing special, used, I wouldn't pay over $50.00 USD for any of them.
  5. Many years ago I made myself a very inexpensive Denver chair and it has served me well enough, though I've long wanted to improve on it in a few areas. About four years ago I built an observing chair very similar to this one from plans I found online. The only material difference I see is I used wooden dowels rather than pipe. I've decided to build myself this viewing chair because the Denver chair doesn't have enough height to use with my frac or cat, though I'll likely go with the wooden dowel rods in this build as well. Thanks for making this available!
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