gorann

Very few of us have the luxury of living close to a major astro-dealer so we have to rely on having everything shipped. It has worked well for more than the dozen scopes I have bought from dealers so far. As David indicate, one should be slightly worried if buying from a private person that may make packing mistakes.

The image is already in an excellent shape! Will be interesting to see if 20 hours will make much of a difference.

Thanks a lot Chris!

The area just north of NGC 7000 is a complex mix of Ha emitting nebulosity covered by a network of dark nebulae and a few bright reflection nebulae. The area is not that often imaged, maybe because there are no major iconic objects there, but certainly there is a lot going on. The absolute brightness of the area is quite weak, but not difficult to catch at f/2 after several hours of integration. The bright patch of nebulosity at the southern border of the image is the northern tip of NGC 7000, aka The North America Nebula. I have not suppressed the blinding brightness of NGC 7000 to give an indication of the relative difference in brightness between these areas of nebulosity. This is a two-panel mosaic with about 50% overlap from my Samyang 135 piggybacking on my dual-RASA rig. I planned the mosaic for the RASAs and the little Samyang had to get what it got (hence the big overlap). Omegon veTEC571C with NBZ (Ha+Oiii) filter. 213 x 5 min, so nearly 18 hours @f/2. Processed in PI and PS including the XTerminator tools. Yesterday I posted what the RASAs caught, which is in the central part of the Samyang image: Cheers, Göran

Impressed! Looks very promising. Maybe you need to blacken it all too. Keep us posted.

Thanks a lot Dave! Those are my darlings too😉

This is a two-panel mosaic of a rather rarely image area in Cygnus, a bit north of NGC7000. It contains a nice mix of red Ha-emitting nebulosity, dark nebulae and blue reflection nebulae. I imaged it over two recent nights with my dual-RASA8 rig with NBZ filter (Ha+Oiii) on one of the scopes and without filter on the other. I then essentially mixed the data 50:50, so this is a HaOiiiRGB image. Total integration time was about 36 hours. Given that it is a f/2 system and I gave it a decent integration time the image is quite deep and show more dust and colours than any image I have seen of this area. While processing I noticed a small PN like structure. It is identified by the Astrobin platesolve as PK091+01.1 but it is registered as PN G091.6+01.8 in Simbad. Surprisingly I cannot find it on https://planetarynebulae.net/. I have not been able to find any other images of it so I thought it could be worth posting a crop even if a RASA has really a too short focal length for imaging small PNs. Cheers, Göran

Really outstanding Wim! I know you had to fight to find openings between clouds for this one. Very few know about it or seen an image of it, and no one has seen it llke this before. Cheers Göran

Great! I would be very pleased with that first light. The Samyang is just such a great little light bucket, and like Olly I never stop it down.

Great image Olly! You captured a striking large patch of dark nebulosity just above (and partly on top of) the Soul that I think is seldom seen (at least I have not seen it as clear as this). Maybe only a RASA would reveal that😆. If you add some panels to the right you will also catch that big SNR (https://www.astrobin.com/u17lx0/C/) but then you probably need NB.

I just had a comment on my previous post that I should soon have covered all of Cygnus. Not so, much remain but I covered a part of it and just put together this mosaic. This is a two-panel Samyang 135 mosaic to which I have added about 50% RASA8 data to four of the more busy areas. There are quite a few supernova remnants in the image, some of which are rarely imaged (and unfortunately not annotated by Astrobin annotation attached). Most of the SNRs are revealed by their blue (Oiii) nebulosity, which I have here selectively stretched since they would otherwise be drowned in the Ha and starfield. You can see close ups of some of the SNRs in my recent images here and on Astrobin, where I also give some info on the objects. Totally about 40 hours at f/2, so quite deep.

Thanks Steve! I keep searching for new things, but sometimes I feel the universe is not infinite, especially when I now and then realize that I just imaged something I imaged before.

Thanks a lot Steve! Yes, there is a lot to wonder about. I would guess this one is at least as old, maybe even older as it is quite faint. It is not as "clean" as the Spaghetti, which is exceptional, so I think some of the Ha there is just old fashioned Ha nebulosity that happened to be there when it exploded.

Thanks! Ra 21h 57´, Dec 66° 28´. But it is very faint so not a great visual object, if that is what you aim for.

Thanks Wim! Maybe but then I have to get better organized so I can find them all. However, I am working on a wide field right now with Samyang 135 images as a base and RASA data on the highlights.

More SNR hunting with my RASAs. I stumbled on this one by accident when I was imaging NGC 7129 earlier this year and noticed some blue and red filaments near the edge of the image. After some digging I realized it was G107.0+9.0 which discovery was published in 2020 (https://academic.oup.com/mnras/article/498/4/5194/5904084). So now I have got around to image what may be the whole SNR. This is as far as I can tell the first "proper" image of this SNR. It is about as large as the Spaghetti nebula but it is quite faint so easily overlooked unless you image from a dark site with a light bucket like a RASA. Dual RASA8 rig with ASI2600MC and NBZ dual band (Ha+Oiii) filter. 136 x 5 min, so 11h 20´. Processed in PI and PS with the XTerminator tools. Cheers, Göran

Yes, in my experience as long as you keep the obsy laptops off the internet they do their jobs quite well. Never saw the reason why I should spend a lot of time and effort on setting up a system that would make me stay inside on clear nights when there is a great sky out there to now and then keep a look at.

No I run my three backyard obsies without wifi by taking nocturnal walks to check on them. That is the thrill of it for me and I never had the desire to do it from the sofa.

Keep them in airplane mode! I forgot that for one of my laptops recently and guess what happened.....

I continue my hunt for rarely, if ever, imaged supernova remnants (SNRs) In the second image I have made annotations of the following SNRs I could find descriptions of, all from this 2020 paper: https://academic.oup.com/mnras/article/431/1/279/1042396 Three of them also occur (with a G-annotation) in D. R. Green's catalogue of galactic SNRs (https://www.mrao.cam.ac.uk/surveys/snrs/snrs.data.html) 1) IPHASX J200002.4+305035 (G67.8+0.5) 2) IPHASX J195744.9+305306 (G67.6+0.9) 3) IPHASX J195749.2+290259 (G66.0-0.0) 4) IPHASX J195920.4+283740 (not in Green's catalogue) Finally I put a question mark on what looks like a possible planetary nebula or SNR that I cannot find in lists of PNs and SNRs. It is just below NGC 6842 (a small but bright PN). The last image is the regular annotations from Astrobin. At least it finds the Sharpless and NGC objects. RASA8 with ASI2600MC and NBZ filter. 55 x 5 min. Processed in PI and PS including the new XTerminator tools. Cheers Göran

PS. And if you pixel peep at images posted from those Sharpstar Newtoneans you may notice that they do not only give star spikes on bright stars, but that the smaller stars are squares and not round.

RASA is the way to go in my opinion (running a dual RASA8 rig now for quite a while). No dew or frost issue whatsoever even at -15°C in the middle of the Swedish winter. The camera works as a dew heater, which it would not do on a Newton. The only advantage I can think of with the Newton is the possibility to have a filter drawer/wheel for a 17.5 mm camera. Will be very interesting to hear how @fwm891 is abut to solve that - keep us RASArians posted!

Amazing image Olly! Perfect balance of detail and dust and I love seeing Nessie out there free. But now that you have freed her you may have to deal with the Scottish tourist board🤮 Göran

Yes now I can only see the dog! The only question remaining is if it will eat Nessie or just lick her. Maybe the Schottish authorities should be warned?

By the way, when the moon is gone you may want to pick up some Oiii data from this area. There are some interesting SNR remains around: https://www.astrobin.com/yzuvc3/B/