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Xplode last won the day on April 12 2015

Xplode had the most liked content!

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About Xplode

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    Proto Star

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    Astrophotography, DIY
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  1. For OAG guiding the ASI 120 isn't a good choice, you're better of sticking to your Lodestar. The theory is that you can guide at almost 1/10 the resolution of your imaging scope, you're at around 1/4 so that should be no problem. If you wanted an uprade to the Lodestar the ASI290 or the ASI174 is the best choice, in my opinion ASI290 with a small guidescope and ASI174 for longer FL guidescopes or OAG. Lodestar is indeed not the best guidecam and haven't been for years, imho it's way overrated, but still sell well because of it's good reputation Here's a screenshot at 1855mm/f5 with an ASI174 at 0.65", main camera is at 0.67" The best i have seen is RMS 0.31" I'm sure this can be improved upon with some small improvements that i don't think is up to my standards I have also seen flex in the OAG, USB cable from the guidecam is now strapped to the main camera so it doesn't create unnecessary weight on the OAG.
  2. You really want RMS to be under half of your resolution because the peaks will always be larger than the RMS, your setup seems to have peaks around 2" There's generally 3 things that limits guiding, firstly the mount of course, how well will it guide? There's also the seeing and of course how high in the sky you image, there's big differences through the night and how high your scope is pointing if you are seeing limited.
  3. Being able to guide for 5 min with nice round stars doesn't mean that one will be able to guide for 10min with the same nice round stars, flexure give a larger effect over time There's also the higher chance of something happening for longer subs, wind, clouds etc can all ruin 1 10 min exposure, but if 10x1min were taken only 1 minute would be ruined. Also there'sa big difference from 5 minutes to 10 sec which is possible for a CMOS setup, i've tried Sharpcap with 10 sec exposures which gives pretty good results, for most mounts it would be fine even without guiding.
  4. I'm using a CCD myself, slow readouts and having to take long exposures because of the high readnoise are big drawbacks. CMOS helps people with cheap mounts get better images because they can take short exposures, shorter exposures are easier on the guiding. It's also easier to focus with CMOS because of the high framerate CMOS + live stacking is also pretty amazing, especially if you got visitors
  5. I would go with the ASI1600 or the QHY163, going for a 15 year old sensor like KAF8300 doesn't really make sense today.
  6. Very nice and detailed image for such a small scope, colors are also very good.
  7. This was imaged at SkyEyE Observatory in August/September. We're very satisified with the framing and also that we gathered so much dust, being able to use just flats for correction with no DBE making it very easy to pull out the faint dust without uneveness showing up other places in the image. Processing was done by Ola Skarpen We would appreciate any feedback if we can improve it. Frames:Astrodon B 50mm: 33x300" bin 1x1Astrodon G 50mm: 33x300" bin 1x1Astrodon L 50mm: 55x600" bin 1x1Astrodon R 50mm: 33x300" bin 1x1 Total of 17.4 hours Pixel scale 0.667"Telescope: AG Optical Convergent FA14 14.5" f/5Mount: 10 Micron GM2000Camera: Motavian G3-16200Guiding: Moravian G3 OAG and ZWO ASI174mm Mini
  8. Very nice galaxy! Color balanse seems a little off. What i don't like is the black background, it makes it look a little "lifeless". You have lost a lot of faint background galaxies and also the faint dust because of the dark background. Here's an area very close to NGC7331 (upper right corner), lots of faint yellow background galaxies can be seen and also the faint dust.
  9. Looks very unnatural due to the hard editing. If you use Pixinsight there's no reason to use DSS for stacking, PI does a much better job at aligning/stacking. How does a single image look like straight from the camera?
  10. It has worked great for me on Android 9 so there must be something else causing your problem than the android version.
  11. Could it be that the current owner greased the friction locks? "unscrew" the dec lock and check, how it looks inside, should be an easy check.
  12. I have to agree with this, i image at 0.667" from a remote observatory in Spain where conditions are much better than further north like up in the UK and northern Europe. There's large differences in FWHM and guiding performance from night to night (which i expected) I've actually thought about adaptive optics to get more out of the nights that are less than optimal. Something else with larger scope is that they are very hard too cool properly to not get heat plumes. It's a 14,5" open reflector with cooling fans, the roof is opened almost 2 hours before imaging starts. The primary mirror still takes a couple hours after imaging starts before it gets to a nice temp....I wonder how long it would take with a pretty much closed construction like SCT/ACF etc...
  13. It's very easy to flip the glass in a mounted filter, just cut a plastic sheet to fit the locking ring to unscrew it and flip it
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