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alexbb

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alexbb last won the day on September 12 2018

alexbb had the most liked content!

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About alexbb

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    Sub Dwarf

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    Romania, 45N
  1. Very few of my images are captured with a single camera/optics combination in fact
  2. Yes, they seem quite stiff. I never used the polar scope, I found the polar alignment routine good enough even for longer focal length photography. 2 iterations and you should have an error less than 10". Check your power source. Does the power led blink when the mount is slowing down? 11V is not really enough, regardless of the current, even if the specs are 11V-16V. I switched to a 15V power supply and everything is smooth now.
  3. You made Rob less fissionable on the FLO product page
  4. That happened to me too some time ago. There might have been multiple reasons for this, but I tried to do everything right. Same temperature for lights and dark, same temperature for flats and dark flats. I also see that you're using a newtonian so make sure you don't have any light leaks. I cover the end of my newtonians always (lights, calibration) and try preventing light leak through/around the focuser too. I suspect you might have some light leaking into the OTA.
  5. Thank you so much! Congratulations to the other 2nd, the 3rd place, all the other participants and especially to the winner! Alex
  6. Indeed. I've never bothered spending a lot of time convincing eqmod to connect to the mount. I managed on the AZ-EQ5, but never on the EQ6-R. Regardless of the combinations, eqmod refuses to create a stable connection. OTOH, the SynScan app connects without issues and allows pulse guiding too. You can connect to SynScan mount with any other app, pulse guide, etc. Moreover, you can polar align without seeing Polaris using the SynScan polar alignment procedure which I found accurate enough. I didn't find that feature within the eqmod ecosystem.
  7. Thank you very much! It is similar to that one indeed, Dave, except the coloured stars. I might shoot some colour one day some nights. I do have some real RGB, but at a much lower resolution so it's not really worthy to combine them.
  8. Thank you Adam and Tom! For the starless versions I used the Starnet plugin in PixInsight. You can either generate a starless mask or a star mask. Any subtracted from the original image results in the other one. I generated starless images, used the healing tool in GIMP to remove the remaining large star traces, removed the starless images from the original images, removed the non-star traces from the star masks and then removed the final star masks from the original images. This has to be done on the stretched images.
  9. I've been very fortunate lately and had more than a week of consecutive clear nights. Since the first of them had the moon around, I started recording some Ha and ended recording OIII for the Rosette nebula. This year I used an AstroProfessional 102/714 FPL51 ED reduced at 0.8x. I bought this scope mostly for visual as it came at a decent price and I couldn't find somewhere close a used SkyWatcher 120ED. I thought of putting the camera on it and the results were good in narrowband. For this image I shot 2 panels, 5.5h Ha and 4h OIII for each panel. I made 2 starless images for each channel, I combined them then I added back the stars. A full resolution 6410x4586 image + the starless components can be found on astrobin here: https://www.astrobin.com/ral6gn/ Now back to cloudy nights, but there's so much left to process Clear skies and thanks for watching! Alex
  10. I've never been able to connect my EQ6-R mount through EQASCOM as it never recognized the COM port. ?! However, the SynScanPro app manages to connect to the mount and it provides all the functionality I need. I can drive the mount via the app interface as I can with the handset and I can connect with every other program through it, PHD included. You can give it a try, maybe it's even enough.
  11. I didn't save any notes on this one, it was only to test the performance of the scope/flattener combo. But, as I blended all the data I had available, I don't really believe it's relevant. Perhaps the old data was shot through the Esprit and filtered by Optolong narrowband filters (which I sold as the OIII filter was really reflective), the new data was through the 102ED and Astronomik 6nm filters. The flattener on the 102ED is a push-fit one. It might have been tilted a bit as other times I didn't notice any deformation on stars. OTOH, all the connections with the Esprit are threaded, but I noticed elongated stars with that too. Easily visible in this one: https://www.astrobin.com/362549/. Note: it is made of 2 panels in portrait orientation.
  12. Hello and thank you! Not sure about your user on astrobin, but I've more than a thousand recent notifications that I wasn't been able to follow yet due to many other activities. Will check them all one day. I've one example of narrowband image at hand, but I believe the data was blended with some Esprit data too. https://drive.google.com/open?id=1VR3CCD_hTJYEsWAHHXXL7HbYl8CMphHO Narrowband stars are good. Broadband? Not so good, the following image was taken solely with the 102/714 ED with its dedicated 0.8x flattener. You can make an idea about the stars on the whole image. https://drive.google.com/open?id=1xIM4ZSBuBLhNw9omr11uFYH8krmqXw4u I bought my Esprit 80 from FLO and it was checked by Es Reid. My copy displays some dark gap in the stars halos, but I don't see a symmetrical opposite gap. If I remember well, in the lightpath I saw a gap in the O ring holding a lens so that might be the cause. You can see at full resolution here https://www.astrobin.com/362549/ or here https://www.astrobin.com/389908/C/ Overall I'm happy with the small Esprit with regards to its broadband performance, but I'll probably use the larger ED for narrowband. Also probably, I will sell the 80 Esprit and buy the larger 100 with a good matching flattener that can deliver a corrected flat field for a 43mm sensor. Have a lovely day too and clear skies as well!
  13. I found the same with my Esprit 80. I focus manually using a Bahtinov mask. The stars in narrowband through the Esprit are A LOT softer/larger than through a recently acquired AstroProfessional 102/714 ED with FPL51 + 0.8x reducer. In fact, I didn't really check, but I believe the stars are softer in narrowband through the Esprit 80 compared to those I get through the SkyWatcher 72ED + the 0.85x reducer for 80ED.
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