NexStar Imaging Showcase
Posted 21 September 2010 - 08:01 PM
A thread for results of imaging with a NexStar. Let it grow to 20 pages, full of images A few guidelines: please post your image, a description of your optical train (scope, FLRs, filters, etc), your imaging sensor (CCD, DSLR, webcam), number of samples (images, frames in video), ISO/CCD sensitivity settings, processing details. Please also include a link to the original thread where appropriate.
NexStar 8SE, EP-projection (Hyperion), 1500 AVI frames recorded with Canon XSi. We had an interesting discussion about whether it was possible to capture craterlets inside of the Plato with an 8SE NexStar. Tel kept encouraging me I could do it and voilas it finally happened. Here is the thread were this image was discussed
Posted 21 September 2010 - 10:36 PM
Posted 22 September 2010 - 07:51 AM
Seeing was poor,
Three separate videos were captured. Two to capture the moons and one to capture Jupiter.
Settings for moons: 1/25 exposure, 10 fps
Jupiter: 1/100 exposure, 10 fps, 0 gain
Stack of around 300 frames for each in Registax.
Posted 23 September 2010 - 12:36 PM
It represents a joint effort between MushroomBill, (Andy) and myself, of Jupiter at opposition and was captured at about 11:00 UTC on the 21st. September using a Celestron Neximage. Scope: Nexstar 8i Mount HEQ5 Pro.
1600+ Frames, captured in AmCap , stacked in Registax and "tweaked" in P/Shop. Capture undertaken by Andy. Focusing by Tel !
Posted 23 September 2010 - 12:47 PM
Posted 23 September 2010 - 12:49 PM
Telecope: Nexstar 130 SLT
Imager: Logitech Fusion (Modified)
The moon was captured in 4 parts, each being:
180 second avis's @ 1280x960 5FPS
Stacked with Registax
Post processing and alignment of each image in PS CS4
Posted 23 September 2010 - 01:13 PM
Tel ~ it is truly beautiful!!
Many thanks, John. I forgot to say that for the benefit of those viewing, it was "shot" in combination with a X3 Barlow.
Posted 23 September 2010 - 01:18 PM
"You can't see the join" !
Posted 23 September 2010 - 03:55 PM
Great images you two. They just get better.
Keep em coming.
Posted 23 September 2010 - 04:54 PM
Posted 24 September 2010 - 05:27 AM
Canon EOS 500d.
30 Secs exposure, ISO 800.
Edit: Sorry there was some detail missing - sure it was here to begin with.
1) No Wedge
2) Cheated - used a HEQ5 Pro.
3) Yes, Tel is quite close
4) It was his HEQ5!!!
5) No post processing, just 1 x 30 sec exposure.
Posted 24 September 2010 - 07:48 AM
Nice capture. Can't see much evidence of field rotation. Did you use the NexStar mount with a wedge? Also what - if any - processing was involved?
One of our forum Gurus, Tel is not far away from you - also in Oxon.
EDIT: Thanks for the updated post Bill with the additional details. Being a GEM mount would explain the lack of star trails. I was pretty impressed for a 30-sec exposure on the NexStar mount!
Posted 24 September 2010 - 08:41 AM
Wonderful image. Many thanks for posting. Congrats too on the great image of Jupiter you produced along with our good friend Tel.
Posted 24 September 2010 - 07:29 PM
300x10 sec plus 400x15 sec. 50 dark frames, 50 bias, no flats (flats give me headache and no visible benefit at this time). All samples taken with ISO 1600. Data processed with DSS using Superpixel for debayring. DSS image exported without DSS color manipulations to a 32bit integer FITS file. Opened with Photoshop using FITS liberator. Grey scale 16-bit images combined into RGB. Some levels and curves applied. Finally, the resulting image loaded into stack AGAIN along with the Green channel. Green channel on top, RGB image on the bottom. Luminosity mode used to bring overall brightness of the DSO up.
This image was included and discussed in this thread on page 10
Posted 24 September 2010 - 07:46 PM
8SE, Canon XSi, around 400x 5 second images, processed with DSS, light pollution removal with Carboni's tools in photoshop, slight color saturation enhancement.
Posted 24 September 2010 - 07:59 PM
0.5x: prime with 6.3FLR
1.0x: 21mm with 6.3FLR
3.9x: 8mm with 1.6x barlow
5.3x: 8mm w/ barlow w/ 14mm FTR
6.9x: 8mm w/ barlow w/ 28mm FTR
8.4x: 8mm w/ barlow w/ 14+28mm FTR
10.1x: 8mm w/ barlow w/ 28+28mm FTR
Posted 24 September 2010 - 08:07 PM
Posted 24 September 2010 - 08:17 PM
Posted 24 September 2010 - 08:25 PM
Posted 24 September 2010 - 08:28 PM
Jupiter taken with Nikon D40 Afocal ISO800 1/40" single frame. Camera was set at 35mm and F5. Taken through a 2" 32mm EP and 2X Barlow.
I'm also having no luck with Prime Focus on Planets or DSO's
Posted 30 September 2010 - 12:53 PM
NexImage, stack of 700 frames. Seeing 5/10. 1/250, 10fps
Posted 30 September 2010 - 02:07 PM
Posted 30 September 2010 - 02:15 PM
This is fun. As soon as it got cloudy, I pulled the plug and was inside the house within minutes. The SE8 mount, with its legs pulled in, can sit unobtrusively in the corner of our living room ( well, we'll see how long I get way with THAT ).
But this is just what I wanted. I love this setup. And I enjoy coming back to this forum. I really like the way you welcome folks here.
Posted 30 September 2010 - 02:18 PM
Posted 30 September 2010 - 03:17 PM
This image consisted of 1300+ subs. captured in AmCap, stacked and processed in Registax 5 and "tweaked a little in P/shop CS2.