Hi Hyper,
Welcome to iceinspace,
Thr 8 inch Dob you got is an excellent scope.
You need to first check collimation of the primary and secondary mirror, many tools to do this from, a collimation cap, cheshire eyepiece and laser collimators. I prefer a laser as its easier.
Start with the lowest power first - 30mm which I believe you are using now. Get the finderscope aligned with eyepiece to ensure you can easily find stuff.
I recommend star maps or Stellarium to look for objects.
At this time of year I would start off easy:
- moon
- m42 orion nebula
- 47 Tucane gc
- Jewelbox ngc4755
- Eta Carina
Hope it helps.
M11
Quote:
Originally Posted by hypersonics
Hi All,
Got a Bintel 8" Dobsonian and the pack includes three eyepieces, which are SuperView 30mm (2″), 15mm Plossl (1.25″) and 9mm Plossl (1.25″). I don't know the differences among the three apart from them having different focal lengths.
After assembling the scope on Friday, too it out in the backyard. Struggled to get the 30 mm eyepiece to focus, eventually got it. However, due to overcast, I couldn't point to any clear part of the sky. Hoping the weather would clear up in the next coming days here in Canberra.
Being new to astronomy and more so with Bobsonian, would be helpful if I could get some advice on using the scope. Also, what can I expect to observe on an 8" Dobsonian?
Thanks
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