OneSky Newtonian - Astronomers without borders
Posted 05 June 2014 - 09:57 PM
First tonight's half moon, then... Saturn!
- ShaulaB, Tyreay, rogeriomagellan and 5 others like this
Posted 05 June 2014 - 09:58 PM
- Gary Z, rnc39560 and rodney j johnson jr like this
Posted 07 June 2014 - 07:44 AM
I would encourage all beginners like me to do the same, having an experienced stargazer point out where to point double the number of things to look at now in under 15 minutes.
Back to modifications on this little reflector- would it be entirely inappropriate to add a counterweight to an altazimuth? I bought an Orion st80 to help with imaging, but now the assembly is too heavy... Thoughts?
- Jim Haley, rnc39560, Tyreay and 1 other like this
Posted 07 June 2014 - 03:24 PM
Posted 13 June 2014 - 05:55 AM
It's crafting foam sheet from Michaels, I spliced two sheets together with hot glue, glued on a few tabs, and glued the whole thing to the inner rim and the factory shield. Fits like a glove, required no disassembly. New England weather has been abysmal the past week, will report in with more updates hopefully this weekend.
Thanks for the suggestion!
- starmason, Jim Haley, buddyjesus and 4 others like this
Posted 13 June 2014 - 12:10 PM
- rnc39560 likes this
Posted 13 June 2014 - 01:12 PM
I'll be using mine on an upcoming trip to central Oregon in two weeks (new moon). Can't wait!
- theropod and debrent like this
Posted 16 June 2014 - 11:03 PM
120 second, iso 1600, 30x mag...
- Jim Haley, Tiraehd and rogeriomagellan like this
Posted 17 June 2014 - 05:52 PM
Taking pictures - it seems like a lot of newtonian owners have the problem of not being able to focus. Everyone's solution is "add a 2x barlow", which I did without any luck. I believe the reason for the problems is the focal point after the secondary mirror is too close to the centerline of the telescope, the DSLR can't physically get close enough to focus. A barlow pulls the focus point outboard to a spot that you can focus on. Or so they say...
The first picture is the setup that everyone recommends, that (at least for my telescope) did not solve the focusing problem)
Posted 17 June 2014 - 05:55 PM
Posted 17 June 2014 - 05:57 PM
- uardian61 likes this
Posted 17 June 2014 - 06:08 PM
Posted 17 June 2014 - 06:16 PM
That being said, the red dot alone is not adequate for finding saturn in the camera. I spent an hour trying to find the planet in the camera, caught a fleeting glimpse, and lost her. Doing some reading it seemed like everyone taking pictures is using the Orion 80mm ShortTube refractor as a guidescope. The deal was right, I bought some 160mm tube rings, and upgraded the telescope.
Posted 17 June 2014 - 06:20 PM
Posted 17 June 2014 - 06:30 PM
I had the night before finally caught Saturn in the camera, but was frustrated with only being able to take a single 0.5 second exposure before having to carefully re-center the image using the alt-az so as to not lose it forever (the fuzzy picture of saturn posted earlier was the only shot that came out somewhat). What got me to decide to make the investment in the equatorial mount however wasn't the astrophotography aspect, it was sharing views with a lot of people.
The guy with the EQ could point at an object, sit back and talk while sharing the image with the people at the observatory. I, on the other hand, would show my friends saturn, step back for 30 seconds, then have to refocus for the next person. It was a really rewarding experience, but it would have been nice to not give people the boot every time to center on the image. That led me to my latest purchase - the Celestron CG-4 equatorial
- Tyreay likes this
Posted 17 June 2014 - 06:44 PM
That being said, here is where i need the experts help-
My friend who pointed out M13 to me originally noted that I got some coma action going on with the image I posted earlier. Not knowing what that meant, I did some reading...
So the coma is due to the lens not being aligned with the reflected image. It is inherent in newts, but I'm thinking that the torque of the camera from the zoom eyepiece/barlow moment arm is torquing the focuser, and increasing the coma effect... thoughts? will something as simple as a bungie coord fix this? or should I think about reinforcing the focuser? Any commentary is welcome!
- Tyreay and JodyC1957 like this
Posted 17 June 2014 - 06:53 PM
- mckhb1 likes this
Posted 17 June 2014 - 08:49 PM
BTW, I think your paired rig is cool.
- Raginar and otsog like this
Posted 17 June 2014 - 09:50 PM
I haven't noticed any coma effect when just observing, is there anything about the photography end of the thing that could be causing it? If it's unavoidable (without huge expense) that's fine, I just want to make sure it's not due to something I'm doing inadvertently
Posted 24 June 2014 - 04:24 PM
- sasq24 and rogeriomagellan like this
Posted 02 July 2014 - 06:57 AM
I was experimenting with a bahtinov mask and a polar finder with pictures of M13, my mount was going to crash into itself so I thought I'd point at the ring nebula and quickly take a shot before I packed up. The nebulae are (In my opinion) a bit boring in the eyepiece, but holy cow color! I'll definitely be trying my hand at other nebulae in the future.
Still have to resolve the coma issues (if possible) without sacking my bank account... I'll continue to post less than adequate/novice photos here for critique in the meantime. As always, suggestions for improvement are encouraged
- Raginar, rnc39560 and xvariablestarx like this
Posted 26 July 2014 - 08:29 AM
- rogeriomagellan likes this
Posted 28 July 2014 - 11:23 PM
Are you deliberately trying to drive me crazy and make me go insane???
I have been the owner of an AWB OneSky scope since the first week of July (2014). But, of course, the summer views of the night sky (and the weather) have SUCKED down here in southeast Texas since I acquired my new scope.
I think it must be the curse of new equipment!!!
Thanks for sharing your experiences with the scope and the photos!