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almcl

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About almcl

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    Telford, Shropshire

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  1. ngc7023 iris

    Are you post processing with Startools by any chance? If so, then it might be worth winding down the red reduction slider in the colour module. I found this a rather challenging DSLR target last year, been meaning to go back when it comes back into view from my garden, be interested to see how you get on with more subs?
  2. Astro Crossword

    Many thanks for that, Kerry. Looking forward to solving it (eventually!) Think the clues for 9 and 10 AC in the pdf, are actually numbered as 2 and 3?
  3. What could be causing this?

    This looks like 'walking noise' . There's quite an amount of drift between frame 1 and frame 30 something and it looks pretty linear, so any hot pixels can get 'smeared'. Don't think flats will help but dithering might?
  4. Cataracts

    I am a bit further along the path, having had a cataract operation on one eye about six years ago. The result of this is that one eye is now 'bionic' and sees clearly at long range while the non-operated-on eye is good for close-up work and despite being dimmer, is great for making out subtle variations in planetary markings. Being able to see distant things clearly, without glasses, almost immediately following the procedure was a welcome experience, and while I wouldn't recommend cataract surgery as a recreational activity, when or if the time comes, it isn't too bad an experience.
  5. Well done! I particularly like the image of Hercules, Lyra, Cygnus and Draco. The best option might be to experiment; try taking more shots and stacking; if you can set a longer exposure (not familiar with iPhones) try that, too. The dimmest star I can find in the 2nd image is 82 Her which Stellarium gives as 5.35 but see if other, dimmer stars come up with longer and/or more exposures? Look forward to seeing the results.
  6. sharpcap 2.9 polar align

    Sorry, coming a bit late to this but, yes, I use an ST80 and a QHY 5Lii mono and have managed to get Sharpcap 2.9 to run through the polar align routine. Unfortunately it's now over two months since we had clear and/or dark skies, so can't remember a huge amount about it although changing the exposure seemed to be necessary. Not sure following the guidance to 'move a star' actually improved the PA and it did seem to need to be pointing pretty close to the pole to work.
  7. light pollution help

    If you didn't use flats, then I think it could be vignetting. Try stacking it with some older ones (if you have some) and see if it improves matters. There is some walking noise/hot pixels and also some vertical banding visible, but there's something decidedly strange about the colours in the jpeg you posted - predominantly green in the centre and blue and red in the outer regions. Not familiar with the camera so can't comment on that, but wonder if somewhere in the processing trail the data got 'adjusted'?
  8. light pollution help

    What camera and scope are you using? Also how are you post processing? Do you use flats? There seems to be quite a lot of vignetting, although it may be something else.
  9. The Canon Digital Photo Pro program that comes on the CD with the camera will convert the RAW files to TIFF or JPEG.
  10. I think it would be worth trying both. I have done some wide field (200mm lens) with my astro modded Canon 700 (a couple below) and rather like the enhanced red that the extra Ha gives, but as I have never had an unmodded DSLR, can't offer a fair comparison. (Also I am still learning how to capture and process) and
  11. Hi Jim I use a Canon T5i attached to my 8" Skywatcher. Initially this was mounted on an EQ5 with added motor drives. Guiding was added, initially with a finder scope and a cheap webcam but eventually using a SW ST80 and QHY 5Lii guide camera. I think you will need an equatorial mount of some sort (although if you look at some of the images in the thread on the 'No EQ DSO challenge' you will see this is by no means essential). How big a mount you need depends on what scope/guiding camera arrangements you settle on. Planetary and DSO have different requirements and you may not be able to get one set of equipment to do both. I now use an Alt/AZ EQ6 when at home but keep the EQ5 which is a lot lighter for trips out to a dark sky site. The EQ5 struggled sometimes with all the kit mounted, but it did work and several of the images in my album were taken with this. If you can find a mount that will cope with your 10", you might get some awesome galaxy images.
  12. I used the SW enhanced hand controller (controller) to guide my EQ5 with a SW200P and ST80 guidescope on board. This was way beyond a sensible weight but it did work, just not always. I can't say for certain which, but several of the images in my album were produced with this rig. This was imaging at about 1"PP - so I think it's well worth a try.
  13. Cataracts

    I had cataract surgery on one eye about four years ago, so now have one 'original' eye and one 'bionic' one. Being able to see distant objects clearly again was amazing. The difference in vision for stargazing is noticeable, too. The 'bionic' eye (with the replacement lens) sees things much brighter, the 'original' eye sees contrast much better. The focus points for both are quite different. Different surgeons perform the op differently and it is definitely not something I'd do again for fun, but it was over within an hour. There is a slightly increased risk of retinal tearing post surgery, and I did experience this, but this too was very quickly sorted by the NHS and full vision is back again, with a bonus of slightly reduced floaters.
  14. If you do go down the EQ5 route, it's possible to add stepper motor drives and use an Astroeq to make a very capable goto system, but as Brantuk says, the 200P is a bit too much for imaging on an EQ5.
  15. Not sure how it would work in the US, but here in UK I got the council to paint out a section of a street lamp by explaining how the light shining through the windows of my house was disturbing sleep. A digital image of the problem attached to an email got a response and action within 48 hours, which rather surprised me. Worth a try possibly?
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