The skies were strangely perfect last night even though I got a new scope; here's the summary.
- The manual it came with is for the original Nexstar 5, but it has the aux and autoguide ports in the base which confirms it is indeed a 5i if I understand correctly. It had the original purchase receipt dated Dec 2005, which also corresponds to the 5i period I think.
- There is a Celestron warranty repair invoice dated Mar 2007 that says the following. This was good to find.
- Upgraded mount to Nexstar SE series electronics
- Replaced hand control to flash upgradeable version 4.12
- Cleaned and collimated optics
- It appears mostly complete, missing only one of the three base mounting bolts. Not sure if that matters, but I may contact Celestron or just try to make my own. As mentioned it did have the tripod spreader. It included the following accessories:
- Standard RDF
- Standard diagonal
- Two visual backs, one made in China and another made in Taiwan with 2 set screws (I assume this one is older).
- Standard 25mm plossl eyepiece.
- Two Antares plossl eyepieces, 7.5mm and 10 mm.
- Two Vixen LV eyepieces, 4mm and 5mm (unusable in this scope I think).
- T-adapter and Canon EOS ring.
- Extra finder bracket, which actually seems it's for an 8"
- Tripod and allen wrenches
- The mount base is larger than I expected; I think it's the same mount as the 8i? Might be too big for an airline carry-on.
Took me a bit to figure out how to work it, it's been a while since I've had one; it's not always intuitive. The finder adjustment screws were loose, but after tightening them it's still a bit hard to align precisely due simply to the lack of precision and lack of resolution.
Jupiter looked great in the 25mm but not in the others. The collimation is very good and the seeing forecast was decent and didn't look too bad, but I was in the city and hardly any stars were bright enough to judge very well. There were some aberrations that may have been due to my contacts or the eyepieces. The focuser is ok but a little stiff, but I've never liked SCT focusers in general.
The main issue is backlash -- or something else is wrong. Sometimes it takes 10 seconds before it starts moving on even the middle slew rates. I will have to try adjusting the backlash tonight.
Edited by Craig Smith, 24 August 2019 - 11:38 AM.