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I've been less active lately in this hobby, but I've a few images done, others waiting in the pipeline to be processed.
This is a "crowded" area of our Milky Way galaxy, visible all summer from the northern hemisphere. The Cygnus constellation is home of many named and nameless nebulae.
Starting from the left (North), below the brightest star, Deneb, the Pelican and the North America Nebulae are very popular; going to right, just below the brightest star close to the center of the image, Sadr, lies the Gamma Cygni Nebula. A bit towards the top-right there's the Crescent Nebula and going forward top-right, there's the Tulip Nebula. Finally, at the bottom-right corner, the Veil Nebula, a super nova remnant.
All these are surrounded by shiny gaseous filaments or dusty patches blocking the light.
I started this during the pandemic lockdown. All of the data was captured from my hometown from a balcony brightly lit by a sodium street lamp, but the narrowband filters did their job well, blocking successfully the sodium emission.
A total of 23 hours is made of 2x3 panels composed in a larger mosaic, each panel consisting in about 1h of exposure for the red Hydrogen and 3h of exposure for the cyan Oxigen, all through a Sigma 105 macro stopped at F/4, ASI1600MMC with 6nm Astronomik filters.
I'm planning to shoot RGB data too and make an RGB/HOO composition.
Cheers and clear skies!
astrobin link: https://www.astrobin.com/r22yre/
flickr link: https://www.flickr.com/photos/170274755@N05/49939128338/
Messier 57 is is just coming into a position for a decent look around 11 30 pm. IT is a colourful object and I thought it would give me a good target with which to practice my colour developing in PS/Lightroom. I have read so much about how to produce a LRGB image from the four stacked/calibrated luminance, red, blue and green images, a lot seems contradicatory and some, when followed, gave me colour yes, but not as we know it. I am sure a fair chunk must be put down to me. Anyway, I now have a work flow which gives me colour, sometimes resembling what other people have obtained. Progess of sorts.
This images is based on 114s subs at gain 139, offset 21.
L 39, R 20, G 20, B 19
Calibrated and stacked in DSS (flats, dark flats and darks)
Messier 57 Ring Nebula in Lyra
NASA: M57, or the Ring Nebula, is a planetary nebula, the glowing remains of a sun-like star. The tiny white dot in the centre of the nebula is the star’s hot core, called a white dwarf. M57 is about 2,000 light-years away in the constellation Lyra, and is best observed during August. Discovered by the French astronomer Antoine Darquier de Pellepoix in 1779, the Ring Nebula has an apparent magnitude of 8.8 and can be spotted with moderately sized telescopes.
Equipment: Celestron 9.25 XLT at F10, Skywatcher EQ6 Pro GEM, ZWO 1600MM Pro, ZWO EFW with ZWO LRGB filters, QHY5IIC guide camera on Skywatcher 9 x 50 finderscope, Celestron Focus Motor
Software: Ascom 6, Eqmod, Cartes du Ciel, AstroPhotography Tool, PHD2
Here are my SN targets for next week (weather permitting)...
1.NGC 3643, SN2020hvf, Mag 12.4 (observed on 27th April & 8th May)
2.M61, SN2020jfo, Mag 14.5 (observed on 8th May)
3.NGC 6118, SN2020hvp, Mag 14.6
4.UGC 10561, SN2020hvq, Mag 15.9
5.PGC 056685, SN2020fhs, Mag 16.1
(Remember to rotate the finder charts 180 degrees to match the view to a dob)
Since I am very new to this, I struggle a lot. Especially when observing planets and also recently deep sky objects. My telescope is an amateur telescope and its almost 11 years old (The telescope was re used a year ago). During summer of last year I took photos of Saturn,Jupiter and a month ago took photos of Venus and Mars. About 2 days ago I stumbled upon a new thing in the sky, (Unfortunately, I didn't take a picture). It definitely was in the Orion constellation as I had observed Betelgeuse and the 3 stars that were close to each other. After a couple of minutes later I saw 2 stars next to each other and another two which were on top of the other star, surrounding these set of stars were a blue-ish and grey-ish colour at the same time. I had done some research and many people told me it was the trapezium cluster found in Orion. I honestly don't know. Any ideas? Thanks.
With clear nights forecast next week and the moon getting later to rise 😀, I have done some SN research this morning to id some targets for next week...
Here are some scans of my research notes and star charts for use next week...
I will be targeting the following new SN:
AT2020ftl, NGC4277, Mag 14.9 SN2020dko, NGC5258, Mag 16.6 AT2020enm, IC1222, Mag 16.7 SN2020fqv, NGC4568 (Siamese Twins), Mag 15.3 SN2020fcw, NGC5635, Mag 16.1 SN2020ees, NGC5157, Mag 16.5