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Snoani

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About Snoani

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    Nebula

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  1. I have taken delivery of a couple of new toys this week in the form of an auto focuser and ASIAIR Pro and took the opportunity of a few days clear skies to have a play, while also trying to resolve some spacing issues. With the moon increasing in size I decided to focus primarily on H-Alpha filter. I think that these would have been crisper with less of the moon on show but I am still happy with them and look forward to adding some colour data in the future. Horsehead - 29 x 360s light frames in H-Alpha calibrated with darks, flats and dark flats. Lobster Claw
  2. In answer to your first question, I would say that they are one of the easier targets to capture, but can be one of the harder to process due to the brightness of the star(s) in the region. The Horsehead and Flame are right next to each other and the entire thing can be imaged with with anything up to 700mm, although I personally think somewhere between 350mm - 480mm can frame the whole thing nicely. What I don't know is whether your DSLR is modified. The hydrogen gas around the horsehead is beautiful if it can be captured.
  3. Thank you both for your replies. It is still looking like I shall have some clear sky time tomorrow night, so I'll start the night by taking a few images at 90 degrees before returning to my normal rotation and undertaking an image run. I hope that it will be that simple to identify, albeit maybe not to resolve the problem. I've not attended a star party myself, although I believe that it is still running, albeit not in the last 10 months for obvious reasons.
  4. Thank you for your reply. I don't think it would be tilt because I think this would have shown up on the experiment that I ran earlier. However, I hadn't considered rotating the camera or testing the exposure length. I am forecast some clear skied on Thursday and hopefully these will materialise. I'll give your suggestions a try then.
  5. Evening all Since putting together my rig earlier this year, I feel that my images have improved massively and continue to improve as I gain experience and learn from my mistakes. However, one thing that I have been plagued with from the start is elongated stars in the corners of my images. I had honestly believed that these were due to a back focus spacing issue but I have taken the opportunity tonight to run an experiment and it appears that my field flattener and flattener/reducer are both spaced and working perfectly, so I am now left with the conclusion that it is another issue. I
  6. I've just tried and can access but just a few days ago I received an error when trying to access the manuals. I did manage to circumnavigate the problem to find the manual I needed by going to the product in question and clicking on the manual link from that page. Jem
  7. They can and should be taken for each and every filter used. Jem
  8. I can't claim to be an expert in any way but it looks good to me. A really nice image. When zooming in it looks like you have a hint of DSLR walking noise. If you didn't do so, I would recommend that you consider dithering as it a god send, particularly when using a DSRL. That said, it doesn't remove anything from this image and you should be pleased.
  9. I've taken advantage of a few clear evenings over the last week to make my first serious attempt to capture the Horsehead Nebula. It is made up of just 20 x 180s of each RGB and 20 x 360s H-Alpha using an ASI 1600MM Pro, Meade 6000 80mm and HEQ5 guided. It does have a little bit of light from nearby Alnilam intruding from the top of the frame, but this is significantly better than what I had to crop out. All in all with the limited data that I have taken I am very happy with the result. Constructive criticism is always welcomed.
  10. Thank you both for your replies. That makes sense and now that I have looked at the FOV on Stellarium, it makes complete sense. I am frankly just glad it is not an equipment issue. I left my rig in tact last night and have just setup as I have a lovely clear sky currently, and I will continue to capture as it is and crop the final image. I very much appreciate your help with this.
  11. Thank you for your suggestion James. I ran a search and looked through numerous posts but couldn't find anything similar. All frames are showing the same issue so I decided to end the run on that filter and try others. It is appearing on all filters apart from H-Alpha, which I assume is because the light frequency is being blocked. I think that there must be something in my image train. I am therefore undertaking a significant H-Alpha run tonight, because my mount is guiding as good as it ever does, and tomorrow I'll break down the image train to check for artefacts before the forec
  12. Evening all I have just setup for a night of imaging and have trained my scope on the Horsehead and started the image run as usual. However, I have just looked at the first light frame to find a 'streak' in the corner that I have never experienced before. I wonder if anybody could provide some advice about what it may be? I am using an ASI 1600MM Pro on a Meade 6000 APO. It is only the third time I have used the camera, but I did not experience this the first two time. I don't know if I have problem in the image train or whether it can be removed with calibration. Yo
  13. I have been intermittently capturing data towards this throughout December on the few occasions that the skies have been clear. I managed to capture and intergrade H-Alpha data during the full moon on New Years Eve, before the freezing fog moved in and interrupted what was meant to be a full night of stars. It is not perfect by a long shot but it was a good test for my new camera and I am ready to apply what I have learned on a new target in 2021, hopefully sooner rather than later. IC 405: Flaming Star Nebula taken with a ZWO ASI 1600MM Pro, Meade 6000 80mm APO and HEQ5 m
  14. Merry Christmas Peter. I have just shown your photo to my wife and she has asked me to capture it for next Christmas so that we can make Christmas cards using it. I only have a small refractor (480mm) and note that the scope you used would be 4x more zoomed into. So that I can gauge what may be possible, can I confirm whether you cropped your image to frame the 'tree'? Thanks Jem
  15. Hi Simon I have an HEQ5 and originally powered it using one of these. It worked perfectly until I upgraded to a neater option this year, i.e. with less cables. Jem
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