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About montezuma110

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  1. Taken last night, a mag. -7.8 flare, just off the tail of leo. Produced by Iridium 57 satellight 30 sec exposure @ f/6.3 My first time to see or photograph a flare, so still need a bit of practice with the timing. Was very impressive to watch. Iridium57 in Leo by montezuma110, on Flickr
  2. Just checked, the load was 4.7kg, sounds like it could have been the weight. Now I think about it when I took the picture last year the camera was mounted on the diagonal mirror, as supposed to mounted in a straight line. Guessing having the weight of the camera further out from the pivot point wouldn't have helped. Guessing there is nothing else I can do apart from buy a new mount. Thanks
  3. My mount is a Skywatcher AZ Goto mount. Telescope is 1500mm 5inch Mak-Cassegrain. As i began capturing images last night i noticed that it was not following the stars correctly and i was getting star trails, even on a 20sec exposure. I Tried re aligning it but still got star trails. After looking back over my images the trails do not look like field rotation. I have imaged with this mount before at 30 sec subs and had no issue. As far as i am aware i carried out the normal alignment process as per usual. The only thing i have noticed recently is that when slewing the horizontal axis is sometimes sluggish and varies its speed. If anyone has any suggestions what the problem may be then they would be greatly appreciated. Thanks I have attached two images comparing tracking from last night to September 2012. They are both 30 second exposure, through a 1500mm scope. Jan 2013 Sept 2012
  4. Which steps of this process are performed in DSS and which in photoshop? All my frames are RAW, and my flats were same iso, focus and focal length. I just load all my frames into DSS and then edit the tiff in photoshop. Is this the correct procedure?
  5. I have had a similar problem, did you use flat frames when you stacked it? If not I suspect it is the vignetting of the scope and camera. If you re-stacked the image with flat frames it should hopefully improve. Here is some info on flat frames on DSS FAQ, http://deepskystacker.free.fr/english/index.html Hope this helps.
  6. Still struggling to get a good image, guessing there just isn't enough data there. New image with flat and bias. Any suggestions? Thanks
  7. Ah, ok I know how to use curves. Will post the new one tonight. Will a composite of 100 30 second exposures be similar to 50 60 second exposures?
  8. Thanks for the advice. I have done some flats and bias and reprocessed in dss. Derek, what exactly do you mean by compressing the contrast?
  9. When I was out last night i captured this image. Its 55 lights frames at 30 seconds each @ f6.3, iso 800. Taken by a 40d on a alt az go to mount, with a 250mm lens. What do i need to do differently to differently in order to get an image of the full galaxy not just its core. I cant really increase the shutter speed as above 30 field rotation becomes a big problem. If any one has any advice it would be greatly appreciated Thanks
  10. Thanks everyone. I think a 10mW should do fine, though the 50mW is tempting.
  11. Thanks, probably just get a cheap 1mW first then see if I need a 5. Where would be a good place to get one?
  12. What power of laser pointer of laser pointer would be required for pointing out stars. I would ideally want a good solid green beam. I know 1mW is the limit on buying from the uk, would this be powerful enough. Also where would be a good place to buy from, amazon looks cheap, but reviews suggest they are not as reliable. Any advice would be greatly appreciated. Thanks
  13. Taken with a canon dos 40d on a skywatcher 127 alt az goto mount. About 40 images were stitched, but there was a very large overlap. Moon Mosaic by montezuma110, on Flickr
  14. montezuma110


  15. Thanks, i think i understand now. A quark star is a very interesting concept, i have never heard that before. If something overcame its neutron degeneracy pressure and split into its component quarks, would its radius shrink again, therefore getting close or even becoming smaller than its shwarzschild radius?
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