JoshHopk
-
Posts
95 -
Joined
-
Last visited
-
Thanks! Appreciate it
-
Another Rosette Didn't have as long as I would of liked thanks to the clouds, (seems to be a recurring event nowadays!), needs more data to get rid of that noise. Only PNGs so not Hubble quality I tried out StarNet++ for the starless image; it seems to struggle with the diffraction spikes a bit, but I quite like the result. Imaging - SW130PDS, Stock Canon EOS 100D. 40x 3mins @ISO400 (2hrs)Guiding - SW 9x50 Finder, ASI224MCMount - HEQ5 Pro (Rowan Mod)Other - SW 0.9x CCStacked in DSS and processed in Photoshop
- 4,168 replies
-
- 6
-
-
- skywatcher
- 130
- (and 1 more)
-
Deep Sky Stacker.
JoshHopk replied to shropshire lad's topic in Imaging - Image Processing, Help and Techniques
Might be helpful if you could upload the image in question so we can have a better look. As others have suggested it might be to do with focus, exposure, trailing etc. Josh -
Calculating focal lengths with reducers.
JoshHopk replied to Neo_uk's topic in Discussions - Scopes / Whole setups
Hi Chris, To calculate focal length with a reducer, you simply multiply the native focal length by the reduction factor. For your 600mm with a .85 reducer, the new focal length would be 510mm (600*0.85) and for you 715mm and .79 reducer, ~565mm (715*0.79). Hope this helps, Josh -
Hi Graham, It looks like an lens flare to me; probably caused by scattered light coming from the bright moon. I'm not certain though, I'm sure others will share their insights. Josh
-
Hope I'm not interrupting anything! Really loving this little gem of a scope. Imaging - SW130PDS, Canon EOS 100D. 28x 3mins @IOS800 Guiding - SW 9x50 Finder, ASI224MC Mount - HEQ5 Pro (Rowan Mod) Other - SW 0.9x CC Stacked in DSS and processed in Photoshop 2020 Comments and criticism welcome!
- 4,168 replies
-
- 8
-
-
- skywatcher
- 130
- (and 1 more)
-
Hi there, There's a popular control system for equatorial mounts called EQMOD. This software is full of useful tools, including a 'Mosaic GoTo' mode. This will be perfect for wide field shots of large nebulae, the moon and the milky way. There's a great many guides on EQMOD, both on their website and here on SGL, that will give you info on how to use the software and its tools. Here's the link for more info: http://eq-mod.sourceforge.net/mosindex.html HTH, Josh
-
Hi there, Because DSOs are very dim, you need to use long exposures to bring them out in images. You will be limited to very short exposures on a tripod, as it doesn’t track the constantly moving sky. This will cause your image to be blurred; at low focal lengths however this is not so apparent. Something like the Sky-Watcher Star Adventurer would allow you to take much longer exposures. With your current set up, and perhaps a light pollution filter, you may be able to do some wide field images of the Milky Way, but not much else. You can also download a planetarium software, such as Stelllarium, and this will show you what deep sky objects are visible and where they are located in the sky. HTH, Josh
- 28 replies
-
- 1
-
-
- dso
- dso imaging
- (and 1 more)
-
Ah, I was shooting at 1600. Thanks for the info, I’ll use 400 next time. Thanks, Josh
-
Wow! Is that all from StarTools? I’ll have to experiment with it and use some of the different tools I think I’ll use longer exposures next time and a lower ISO
-
Wow! That's cleaned it up to no end. Thanks for the advice, I'd tried denoise but I think I may of chosen the other option. Here's the link to the stack, I forgot to take flats so there may be some gradients: https://www.dropbox.com/s/vd8gfkszyhsocj8/NGC7023_32bit_tif.TIF?dl=0 Thanks again, Josh
-
Thanks Simon, The SWCC is all in all a great corrector, it eliminates coma right to the corners. However it does act as a 0.9x reducer, which means that I have to rack in the focuser quite a long way, causing the tube to take a bite out of the stars. This really isn't a major issue and it can be easily fixed with a hacksaw, or by moving the primary up the tube. I like the 0.9x reduction as it puts the scope to 585mm at f/4.5. Some people say that it suffers with some internal reflections on bright stars (Alnitak for example), but I'm yet to find this problem as I rarely image targets containing such stars. Enjoy your new gear Josh
- 4,168 replies
-
- 1
-
-
- skywatcher
- 130
- (and 1 more)
-
Hi all, I received my 130PDS about a week ago as my first AP scope, and have spent the last few days getting it all set up and balanced. Last night was first light, and I decided to go for the Iris Nebula as it was high up and its size is a good fit for the 130 and my Canon DSLR. I used the StarTools free trial to process it (Hence the low resolution) as i just couldn't seem to get any decent results with Photoshop , (any ideas?). Canon EOS 100D (Stock), HEQ5 Pro, 130PDS, 0.9x SWCC, 9x50 finder and ASI224 28x 3min Guided Exposures (1hr 24min Total Integrated Exposure) Criticism and comments welcome! Thanks, Josh
- 4,168 replies
-
- 5
-
-
- skywatcher
- 130
- (and 1 more)
-
Hi there, You'll need a Canon T-Ring as you say, and also a suitable T-Adaptor; these screw into the T-Ring and then either thread onto the focuser or simply sit inside the focuser.
-
How were you aligning? If it was just through the polarscope on your mount, remember that the reticle rotates with the R.A axis, so Polaris would have appeared to have moved if the R.A axis was not in the same place as it was initially.
