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Lead_weight

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Everything posted by Lead_weight

  1. I've never owned an EQ6-R, but did have a CGX, and used it with my Edge HD 11. It can certainly handle the weight. My rig ran around 35 lbs. The focal length is the killer, as these mounts are cheaply made. I consider that I got a pretty decent CGX. and I guided the EdgeHD 11 reduced with the .7x reducer to around 1960mm. My guiding was sub arc second often .4-.8. But it was always worse in RA. Typical guiding would be .4 DEC RMS and .8 RA RMS. At this focal length, you could see the stars were a little oval. If you were running it with a hyper star, I doubt you would see the oval stars. They would look round. You could probably never reliably run the Edge 11 at native focal length (2800mm) with either of these mounts, as all imperfections of the mount would show in your images. Wind gusts would move the mount...dragging cables move the mount. so keep that in mind. You need a tidy setup, well balanced, with nothing to interfere at longer focal lengths. Hopefully that helps with your decision.
  2. Thanks for the kind comments. I don't like to overcook the image, so a light processing will do.
  3. My M31. Shot over 3 nights. Only 11 total hours. LRGB only with Astrodon filters, ZWO ASI1600MM-C camera, and the WO Redcat.
  4. If you send them an email telling them you have a RedCat, they’ll email you back a word doc showing their camera lens focus system. (It’s not on their website.) That’s essentially what it is. It comes with the focus motor, belt, and mounting bracket. I did have to change the dovetail to the 11” ADM vixen dovetail with adjustable mounting holes. This allowed me to align the belt with the focus barrel. Also, focus tension is very tight, and initially the belt slipped when reversing direction. The RedCat has a focus tension adjuster at the front of the focus barrel that needs to be loosened.
  5. I've really taken a liking to this little scope. I think it's reached its final form. ZWO ASI1600MM-C main camera, EFW8 with Astrodon 5nm narrowband and LRGB filters, ZWO Mini guide scope, ZWO ASI120MM Mini guide cam, Baader Sky Surfer V red dot finder, Moonlite focuser, and CGX mount. I've spent some time imaging the North American and Pelican nebula, as well as the Veil nebula. Had about 6 clear nights in a row. I had roughly 16 hours total on NA nebula in SHO pallet, and I did the Veil on the last night, only 3 hours each channel for bi-color (the OIII channel was slightly out of focus, hence the larger stars in the image). I plan on going back and adding more data for the Veil, and intend on replacing the out of focus frames.
  6. Last week I managed to get an hour of RGB data with the ZWO ASI071 camera doing some tests for William Optics on this scope. The clouds came in quickly and I had to stop. The next day I decided to capture 4 hours of HA data on the ZWO ASI1600MM with an Astrodon 5nm HA filter. I combined the two by removing the red channel from the RGB data and replaced it with the HA data, then cropped the final image to the 1600's chip size.
  7. I shot this over 6 nights. We had an amazing go of clear nights in a row. Now it's all rain until next week. But while it was clear, I managed two nights per filter on my newest scope. A total of ~ 760 3 min images. I think the total imaging time was 37.8 hours. Shot it through my newest scope the RedCat 51mm. It did well, but could have used a belt focuser. I managed to get one together from Moonlite, but only just after imaging this. The scope was able to hold focus a good bit of the night, but the quality curve looked like a swan dive towards the end as the scope lost focus at the end of the night each night. I got out my old trusty AVX to manage the aiming parts of the setup. Guided by an old Orion SSAG I had lying around and a recently acquired ZWO Mini guide scope since it matches the RedCat so well. But I think I'm going to need to swap out the guide cam for something with smaller pixels. Overall though, it worked. Main camera was ZWO ASI 1600 MMC. I used 5nm Astrodon filters.
  8. Wow, that made a big difference. I find it difficult to capture nebulas in RGB unless I have very dark skies.
  9. My Redcat just came in this week. Had it out for the first time last night. I've been following the issues here and on Cloudy nights. Just wanted to add another another reference point. This is about 6 hours of HA. There's very slight coma at the corners. FWHM and Eccentricity look ok. I'd be happy to share data if someone wants a closer look. The larger stars have a very strange look to them, like pinched optics. Someone over on Cloudy Nights thought it might be an internal reflection. I've used this exact imaging train on other scopes and not seen the issue, so I suspect the problem lies in the scope itself.
  10. Thanks. I'm using the ZWO OAG along with the ZWO ASI174 mini guide cam. And i have a moonlite focuser made for the Edge, which has a reduced profile. My guiding is usually around .3-.5 RMS.
  11. I took this over three nights. Not as many hours as I would normally like. 8.8 hours total with the ZWO ASI071MC-Pro and the EdgeHD 11" with .7x reducer and a CGX mount. I have a fair amount of light pollution (Bortle 7-8), so this was 525 60s subs to keep under the LP. Integrated in APP, then processed in PixInsight and Photoshop.
  12. See here: https://stargazerslounge.com/topic/330669-oiii-flats-uneven/?tab=comments#comment-3604600
  13. Ahh, good to know that this probably is. It did look like something a buffing motion might create. I don’t see them in the LRGB filters, so assumed it was something related to the coating on the narrowband filters.
  14. My flats look exactly the same. OIII is the worst or has the most visible stripes across it. I have an Astrodon 5nm OIII filter. It shows up some on SII as well, and not really visible on HA. It doesn't matter whether I shoot flats with a t-shirt, use a light box, an iPad, or the sky, they all have the same pattern. I suspect it's the coating on the filters. But in any case, it fully corrects out using any of the above methods. So I regularly use a flat panel.
  15. I get between 1.8-2.4 on my 102mm refractor. On my 6" RC I get between 4-6, though I feel like I've seen lower, I just don't always watch it that closely. A lot of it is seeing dependent.
  16. I've followed a few threads on Cloudy Nights, and apparently 10 min subs are the limit for the 183. Any longer and the amp glow begins to become uncorrectable. Though you should be able to go for as long as 10 min.
  17. I'm not sure it matters. So long as you can send commands to the mount either through the handset or by plugging directly into the mount, the mount will just ignore the handset. All the mount sees is an incoming command from a com port.
  18. I always thought it looked a bit like a manta ray from the top down.
  19. Spent the last three nights imaging these three objects. Managed to get them all in the same frame of my ES 102mm FCD100 scope. Pretty happy with how it turned out. I would have liked to have grabbed a little more SII data. When I originally captured it, I thought I might only have two clear nights, so I imaged it as HA/OIII. Turns out there's almost no OIII. On the third night, clouds were supposed to roll in about 4am, cutting the imaging session short, but it stayed clear the whole night, and I got a full night of data with the exception that I got a late start due to technical issues when I first started imaging. The ASI1600's halos are rearing their ugly heads on the two brightest stars. I tried to tone them down some by desaturating the colors around both stars...it worked a bit. Another 15 hours and I could probably get rid of any remaining grain, but just don't have the clear nights to get it done. 15.8 hours total imaging time. Equipment: Celestron CGX Explore Scientific 102mm FCD100 ZWO ASI1600MM-C ZWO Filter Wheel with Astrodon 5nm filters ZWO ASI290MM Mini guide camera Stellarvue F50G guide scope
  20. Is there an equivalent version of this scope in the U.S.? I would love one of these smaller fast scopes, but can't seem to find an equivalent, and SkyWatcher doesn't carry it on the U.S. site.
  21. I'll provide my own observations here...no science though! I typically image narrowband at around 200 gain. Since most of the light is filtered out, it takes more exposure time to get signal onto the chip. I also don't have amazing equipment, but stuff that is suitable for the weight and focal length of my scopes. That said, I can't run longer exposures (5min+) without starting to see more issues with tracking. So I image narrowband in my bottle 6 sky 200 gain, 3 min exposures. For LRGB, I typically set gain to 76, this was a number someone on Cloudy Nights came up with as a better option than unity for a little more dynamic range and less noise. I usually expose for 60s to keep under my light pollution ceiling. Anyhow, these settings have worked great for me. All options are a trade off. And no one setting works best. But you should experiment a little with your skies to find some settings that work well for you. One final observation that I've learned after doing this for the last two years is that more integration time is always better. I'm now regularly spending one night's imaging session per filter. And, when I started, I was imaging multiple objects in a single night, giving no more than 1-2 hours per object. What I do now has had a huge impact on the overall quality of my images.
  22. I've had really good luck with my AVX. All my photography is done with it. But I've taken particular care to stick under the rated weight limit, and a focal length of no more than about 900mm. For visual you can go above that, but for imaging, you'll find it's not precise enough (even with guiding) go do longer focal lengths or heaver imaging setups (above 20lbs).
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