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jl694

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About jl694

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  1. Thanks for your reply. I'm not familiar with flare caused by bright stars. Would you be able to post any examples that you've captured?
  2. I took advantage of the beautifully clear evening yesterday to image M13 with 2-minute subs for just over an hour. I stacked the individual frames this morning (kappa sigma clipping) and found something I can't explain. There is a prominent streak to the top left of M13 in the image: (this image is excessively brightened to accentuate the streak) I can't seem to find this in anyone else's pictures of M13, yet it appears in every one of my light frames in exactly the same place. I don't think this is a symptom of my imaging train since it doesn't appear in my dark frames or some flat fra
  3. Hi everyone, I’m thinking of upgrading my imaging setup so I can take guided DSLR exposures. Currently I have a Skywatcher Explorer 150P on an EQ3-2. In order to gain access to an ST-4 port I want to replace the dual-axis motors with the EQ3 Pro upgrade kit, including the SynScan handset. A Skywatcher 9x50 finder or Altair Miniguider would be used as the guidescope to minimise the overall weight. Is anyone using the same equipment? If so, please could you let me know how well the EQ3-2 Pro fares with guiding, especially with a telescope as heavy as the 150P? Honestly I’d be happy with 120s exp
  4. Been in touch with FLO who I bought the coma corrector from. Turns out to be a manufacturing defect so I'm exchanging it for a new one. Hopefully I'll be shooting LP-free images next week
  5. Thanks Kropster! Your image really helps. Does your ring seem glued on too? Mine won't budge in either direction
  6. Hi everyone, I received a Skywatcher 2” light pollution filter in the post today. I was really impressed with its performance when I looked through it at a sodium streetlamp. However I came into difficulties when I tried integrating it into my imaging setup with a Skywatcher Explorer 150P. I wanted to have the following arrangement: Canon DSLR --> M48 adapter--> Skywatcher 0.9X Coma Corrector --> Skywatcher LP filter However, the 2” thread on the coma corrector is inaccessible due to a ring which I can’t seem to unscrew as it appears to be glued in place (see http://www.flickr.com/p
  7. jl694

    Hello!

    Hi everyone, My name is James and I'm from London. I recently sent my DSLR off to be modded. While I wait for its safe return I have decided to join SGL. This site has been immensely helpful since I got properly involved with astrophotography 6 months ago. I have taken this opportunity to join and give back to the community that has offered me so much invaluable advice. To capture DSOs, I use a Canon EOS 1100D attached to a Skywatcher Explorer 150P on a dual-axis motor-driven EQ3-2. I acquire subs with Astrophotography Tool, stack them with Deep Sky Stacker and then make adjustments using eith
  8. jl694

    Astrophotography

    A collection of all my successes in astrophotography, in chronological order to illustrate my progress. For better quality versions, please head to my Flickr page at http://www.flickr.com/photos/111922926@N08/sets/72157639770941174/ Any comments you have would be greatly appreciated.
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