Can I take photos through my 8" Newtonian?
Posted 04 January 2013 - 04:13 AM
I bought a GSO 8" Dobsonian a few months ago and I'm wondering if I will ever be able to hook up my DSLR with my T-ring and achieve focus with it.
I can't focus at the moment but I am wondering if it is feasible to buy an extension tube to allow focus on planets such as Jupiter and Saturn?
Posted 04 January 2013 - 08:49 AM
All you need is a t-ring and a nose piece .
Posted 04 January 2013 - 09:03 AM
Posted 04 January 2013 - 10:51 AM
Can give you details for easy camera mounting if you ask. Gene
Posted 04 January 2013 - 04:06 PM
Posted 04 January 2013 - 07:02 PM
1. Yes 8" is enough aperture to get fine pics.
2. The bad news is a dslr is the wrong tool. A beautiful camera design but awful on the planets on an undrivrn dob to say nothing of vibration issues.
Ill bet you this. I'm tempted to gamble but well call it gentleman s bet. You go use an iPhone or android ok. Buy Orion's smartphone mount by Orion, pricey but it works($70). Then run video. Don't snap pix with your phone of the planets, rather run the cam on video as it transits the field.
Stop the cam then repeat several times.
Next download REGISTAX (free). Load your footage and pic the frames you want stacked before thf planet runs out of the field.
Here's the magic...
Registax will stack all those individual movie stills and assemble them as one strong image - as if it never came from a video recorder.
Adjust wavelets (sharpening) and other stuff and ill bet you it blows your dslr Saturn out of the water.
Don't do this: don't shoot stills or snap single exposure pix with the phone instead it'll look like *BLEEP*.
Now if your dob followed the stars the tracking would yield a sharper image ultimately but even using the drift method it'll outdo your dslr - so long as you stack and refine.
I used to thinks video was a horrendous way to image the moon and planets. Any given frame is awful by dslr standards but the magic is in the stacking. REGISTAX is an amazing tool. The post stack processing that's easy is dramatic and empowering. It's a modern day imaging phenomenon and the other half of every vid image. Now they have other programs like firecapture and such but I love REGISTAX and its soooo easy because its intuitively layed out. The beauty of it is its a very depthful program too and it'll go as far as you can push.
Posted 04 January 2013 - 07:15 PM
No deep space or photos!
Posted 04 January 2013 - 07:24 PM
Posted 05 January 2013 - 12:06 AM
Post your results!!!
Posted 05 January 2013 - 01:07 AM
Posted 05 January 2013 - 05:24 AM
Posted 05 January 2013 - 11:48 PM
Thanks for the information. I was thinking about without camera lens and eyepiece.