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Latest Posts
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Conventional wisdom is wrong i have been getting <1 arcsecond rms with the SAGTI and a 5kg payload. Adam -
By WolfieGlos · Posted
I've wanted to image this one for a while in RGB after some narrowband last year and the shielding of a streetlight across the road, but the added complication of a newborn along with the shorter nights has made it challenging to say the least! Originally started before our little one was born, I had a few sessions with the good weather last week to bring this up to nearly 7 hours. Data collected across 6 different sessions in RGB in all, I was hoping for more of the blue nebulosity that surrounds it's eastern and western flanks, but alas, it must be a bit fainter than I appreciated and the Nautical Darkness of this time of year could be hampering efforts. Maybe another 3-4 sessions (of circa an hour each due to the buildings across the road!) could do the trick if the Moon, weather and, crucially, the baby and wife allow for it! Guiding in this part of the sky was horrific, generally averaging around 2" whilst imaging at 1.05"x1.05", so I'm surprised it came out as well as it did. 184 x 120s + 29 x 90s with Astronomik L2 UV/IR Filter ZWO ASI 585mc + Starfield 102ED + 0.8 Reducer Stacked in SIRIL, Processed in Pixinsight, XT Suite and GIMP And whilst waiting for the Trifid to rise in a few of those sessions, I aimed up at M107 The Crucifix Cluster. Consisting of 127 x 60s (02:07:00), I was surprised how faint and colour-less this glob appeared to be after processing. I think I may have over-stretched it slightly, and it's a shame that the crucifix effect is lost following stretching. The crucifix is created between the stars TYC5635-1066-1 down to TYC5635-989-1, and from 1017-1 to 1042-1. Guiding for this was 0.7", with the same calibration on the same evenings as M20, only that it was higher in the sky. Comments welcome as always. -
May I ask a favor? Could you (or any other Quattro 150p owners) provide me a number for the LENGTH of the OTA? Really unprofessional from the manufacturer and all the retailers that they dont give proper dimensions... I need to fit the little fellow in a cabin bag! (55-56cm) Is it possible to remove the white rim on the top of the OTA? That and the main collimation screws could save enough length... -
If you control starsense with skysafari on your phone or tablet (and I highly recommend you do - skysafari is very good) rather than with the hand controller, then it is fully automatic - skysafari passes through to starsense the time and gps location from your phone. -
I've had very little practical time with my hyperstar since getting it collimated (more by fluke I think!). I was going to fit the guide scope but read it didn't need it, although the longer guided exposure makes sense I'd have come to that conclusion eventually I guess, need to figure out a detachable clamp so the OTA still fits in it's bag. Totally agree with you on the f6.3, I was exposing 3-5 mins with 200mm guiding. To be clear those pics were 4.5 hrs imaging time unfiltered OSC (one shot colour sensor if OP isn't sure as opposed to mono) it was at a dark sky site and 1 pic is about 3 hrs of the data, the other about 2 hrs ... and I'm sure I could process it better these days but I've still a lot to learn on that side, I enjoy the capturing and tinkering more than the learning how to use editing software lol, I'll get round to it !
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Wow! Some truly stunning images there AKB!· 0 replies
I had to be really sniffy not to 'Like' all of them!!
The Andromeda shot was perhaps the one that grabbed me most.
I also really enjoyed seeing the development / evolution of your skills which seems apparent from the sequence of shots.
Regards,
Norris
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Blown away by the Aurora Borealis last night, fingers crossed we might get some more tonight 🙏· 0 replies
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