SGL 2023 challenge 7 - Deep Sky Summer Triangle

[Minhlead]

On 12/08/2023 at 04:20, powerlord said:

Well, I liked @Minhlead wolf rayet 134 so much I had a go myself - a bit of a different framing, and SHO(ish). This was only 5 hours however - the first clear night we've had in donkey's years.

I had taken my scopes out of the observatory for the summer, and somehow managed to screw up the back focus on my Stelamira 90ED with FF - but it wasn't too bad in the end. Certainly one where more integration would help a lot - but with the summer this year I'm trying to shoot new targets each night, since those nights are so few. I think this is my first new image in over 2 months!

Shot with asi2600, L-ultimate and processed in affinity photo and Sirl.

stu

You did great, Stu. Well done!

[Luke Newbould]

A recent foray into shooting nebula with just a uv/ir cut filter from my Bortle 7 home has turned out some interesting results!

The Cocoon nebula, 3hrs integration

Player One Poseidon-C Pro camera

Celestron RASA11

Baader UV/IR cut filter

[Luke Newbould]

And another experiment with just the UV/IR cut - NGC 6914 - 3hrs once again

Player One Poseidon-C Pro camera

Celestron RASA11

Baader UV/IR cut filter

Edited August 17, 2023 by Luke Newbould

[Stefan73]

Here's my go at the North American Nebula which is also the first proper test of my Samyang 135mm (at F2) with an ASI2600.  No filters and nearly two hours of integration over 10th and 14th August (full details on astrobin).  Not sure I've got the back spacing completely right but it turned out better than I was expecting!  Thanks for looking.

[Stefan73]

double post. sorry.

Edited August 18, 2023 by Stefan73
double post

[Ibbo!]

Southern portion of SH2-108 SHO

 

30 Jun 2023 ·  8 Aug 2023 ·  9 Aug 2023

H-alpha 3nm 1.25": 22×600″(3h 40′)
 OIII 3nm 1.25": 21×600″(3h 30′)
 SII 3nm 1.25": 18×600″(3h)

William Optics Fluorostar 132 / FLT132 QSI 690wsg-8 Astro-Physics CCD Telecompressor (CCDT67)

Pleiades Astrophoto PixInsight · Stefan Berg Nighttime Imaging 'N' Astronomy (N.I.N.A. / NINA)

Do the clicky dance for full res.

 

 

 

 

[Ibbo!]

Another part of Cygnus

 

I think this is also classed within the IC1318

20-8-23

H-alpha 3nm 1.25": 9×600″
 OIII 3nm 1.25": 7×600″
 SII 3nm 1.25": 5×600″

William Optics Fluorostar 132 / FLT132 QSI 690wsg-8 Astro-Physics CCD Telecompressor (CCDT67)

Pleiades Astrophoto PixInsight · Stefan Berg Nighttime Imaging 'N' Astronomy (N.I.N.A. / NINA)

Do the clicky dance for full res.

 

 

•  

[tomato]

Here is effectively a 3 panel mosaic of the Cygnus region NE of Sadr. Taken with the SY135/RC571c/NBZ combination, total integration 411 minutes. Calibrated, stacked and the panels combined in APP, processed in PI and Affinity Photo.

 

Annotated

 

[Dan_Paris]

   Hello everyone,

The galaxy NGC7013 is not far from the Veil Nebula in Cygnus. It is a rather unusual lenticular galaxy, with some characteristics of a spiral, about 40 millions l.y. from us. The field is interesting as it contains also some nebulosity that looks a bit like the Witch Head Nebula. This is a rather challenging object from my suburban Bortle 7 backyard. I imaged it last night with my usual setup (right-click for full resolution) :

 

Thanks for looking and clear skies,

 

Dan

 

Technical details

200/800 custom Newtonian astrograph with Romano Zen optics and carbon fiber tube
AP900 CP4 mount on Losmandy HD tripod

ASI183mm (0.66"/pix)
TS 2.5" Riccardi-Wynne corrector
ZWO LRGB filters
Guiding : ZWO OAG + ASI120mm mini + AsiairV1
Luminance : 240 *60sec
Chrominance : 20*60sec for each R,G and B.
Conditions : Bortle 7 skies in Paris' suburbs, hazy skies and decent seeing (2.06" median FWHM on the luminance stack)
Stacking with Siril, processing with Pixinsight

Edited August 28, 2023 by Dan_Paris

[Snoani]

Here is another widefield of the region around Sadr.  The nebula is 7 hours and 20 minutes taken with an L-Extreme filter and 3 hours of RGB for the stars, using an Askar FMA180 scope and ZWO ASI294MC Pro.  All data was captured this month and processed in Pixinsight.  

[WolfieGlos]

First entry is another rendition of NGC 6914. I actually collected the data for this at the start of August but have only just got around to finishing processing it.

I initially intended to image a dark nebula without an l'enhance filter but realised it was in a bad location in my sky, so I changed to this target....forgetting to put the filter back in! So I persevered, and this image is just RGB. I have seen it referred to as the Three Blue Diamonds, but it doesn't seem to be a commonly used name.

Imaged across 4 sessions in August, 39 frames on 7/8th August and 49 frames on 9/10th August, 21 frames on 11/12th August and 36 frames on 15th August.

Canon EOS 800Da + Starfield 102ED + 0.8 Reducer on HEQ5
ISO - 400
Frames - 144 x 300s (12:00:00)
Calibrations - 50 bias, 56 flats, 26 darks.
Stacked in SIRIL
Edited in SIRIL, Starnet, Topaz Denoise AI, AstroDeNoisePY and GIMP

 

Edited September 11, 2023 by WolfieGlos
Image reprocessed. Wasn't happy with it.

[WolfieGlos]

Here is a different take on the "Summer Triangle"; here is the Sagitta Triangle framed between the stars of Delta, Alpha and Beta Sagittae.

Unlike the summer triangle, this triangle is an extremely barren area for DSO's. I can locate only 1 in this area on Stellarium which is "PN G054.4-02.5", and a search online finds next to no information on it. There are also a few PGC galaxies towards Beta Sagittae. Surrounding the 3 primary stars are 5 dark nebulae in the LDN catalogue - all visible in this image, or not due to the starfield! The area to the bottom-right is not a dark nebula despite the relative lack of stars compared to the rest of the image.

Siril detected over 26000 stars in this image, and it didn't even pick up the fainter ones. Imaged during 1 session on 15th August.

Canon EOS 800Da + Starfield 102ED + 0.8 Reducer on HEQ5
ISO - 400
Frames - 29 x 60s (00:29:00)
Calibrations - 50 bias, 56 flats, 10 darks.
Stacked in ASTAP
Edited in SIRIL and GIMP

[AndyThilo]

One of my favourite Nebulae, M27 Dumbbell. This is 9hrs from my B4 garden shot with a Altair 130mm EDT Triplet and ASI2600MC Pro. Processed in Pixinsight.

 

Edited August 26, 2023 by AndyThilo

[Lee_P]

Blimey there are some good images in this thread! I'll have a punt with my latest target, The Butterfly Nebula in Cygnus. It was taken from my back garden in Bristol city centre, where the light pollution is at least as bad as you imagine! I used an Askar 130PHQ telescope and a ZWO ASI2600MC Pro camera. It's OSC, but I combined 15 hours of Optolong L-Ultimate data (Ha/OIII) with 20 hours of Askar D2 (SII/OIII) to produce genuine SHO -- well, as genuine as you can with an OSC camera! Oh, and I took 30 mins of RGB (no filter) just for the stars. So in total it's 35.5 hours.

[WolfieGlos]

Agreed with Lee, there are some incredible images in this thread; well done to all especially with this summer's terrible weather. So I have decided to enter my image of M57 to this one, but I had to remove 90 x 180s frames that I captured at the end of June to meet the start date for this competition.

Previously, my effort was shot entirely with the l-enhance filter (https://stargazerslounge.com/topic/412226-m57-the-ring-nebula/#comment-4398606) so I decided to recapture the frames from June but this time in RGB with no filter to get some better star and nebula colours. This also aided in bringing out the tiny galaxy IC1296 - as well as some of the smaller PGC galaxies in this field, all previously lost due to the l'enhance filter.

Sadly I lost an hour due to clouds so I ended up with 1 less hour of total imaging time compared to previous, but I think it was worth it. There is much more colour in the image now, the outer shell has been mostly retained (possibly due to imaging in astro-dark now) and better processing has kept the noise at bay.

As previous, this was processed to allow quite an extreme stretch on the background to show the outer shell (which also gives the large star halos), and then a HDR blend of the core of the ring blended back in. No star or halo reduction as I feel it actually added something to the image.

There's also a bit of an "alternative summer triangle" theme to this image between Sulafat, Sheliak and Nu Lyrae 🙂

Canon EOS 800Da + Starfield 102ED + 0.8 Reducer on HEQ5
RGB Frames - 42 x 300s at ISO-400 with no filter.
Optolong L'enhance Frames - 35 x 180s + 19 x 300s + 12 x 600s at ISO-800
Calibrations - 50 bias, 56 flats, 10 darks.
Stacked in SIRIL with 2x Drizzle, edited in SIRIL, AstroDeNoisePY and GIMP

TOTAL TIME: 08:50:00

Edited August 27, 2023 by WolfieGlos
Wrong image uploaded, then new one wouldn't upload. Third attempt to upload!

[Ibbo!]

Offset to catch the dark bits

 

20 x 600 secs Ha with 132 reduced to 620f/l QSI cam

Accquirred wih NINA & stacked and processed in PI

 

As  ever do the the clicky dance for full res.

 

 

•  

[Adam J]

On 22/08/2023 at 21:12, Snoani said:

Here is another widefield of the region around Sadr.  The nebula is 7 hours and 20 minutes taken with an L-Extreme filter and 3 hours of RGB for the stars, using an Askar FMA180 scope and ZWO ASI294MC Pro.  All data was captured this month and processed in Pixinsight.  

original FMA180 or the pro model? 

[Snoani]

51 minutes ago, Adam J said:

original FMA180 or the pro model? 

It's the new pro model.  I absolutely love it.  

[Fegato]

Sorry if you've already seen it, as I've already posted this in the Deep Sky Imaging forum. I won't repeat the commentary, but this is the Veil Nebula in broadband, a six panel mosaic producing a very wide field to bring out the surrounding dusty areas.

RASA 11v2 on CEM120, ZWO ASI2400MC Pro, 4h 14' across the 6 panels

 

[JIM CASE]

Two Quite Different Aging Stars
This image includes two aging stars approaching the end of their lives. NGC 6888 is the bright Crescent Nebula at the top right which is energized by a Wolf-Rayet star (WR 136), a massive star which will end its life in a supernova. At the lower left you can see the Soap Bubble Nebula (PN Ju 1), a planetary nebula of a much smaller star, shedding layers as it nears the end of a much longer life. This planetary nebula was first discovered by amateur astronomers in July 2009.
The image was captured with 10.5 hours of exposures with a AT115EDT, the ASI2600MC, and the Antila ALP-T dual narrowband filter, using the CEM40, ASAIR+, and ASI OAG, with the ASI174mm mini for guiding. It was processed using APP and PS.

[900SL]

Some cracking images on this thread, I'm awestruck at the detail and process. I do think entries should be limited to one per entrant, though.

EDIT: I have deleted my previous Crescent Image and added the Veil, taken on the same trip to Loutro, Crete two weeks ago.

 

I took a Fornax LT2 star tracker to Crete, a Redcat 51 and a 533MC Pro. AAP for plate-solving and imaging

Unguided, undersampled, manual dithering,  3 minute exposures, IDAS NBZ DNB, 4 hrs subs, 105 gain:

Ha Oiii extraction in Siril, Pixel math recombination, Starnet 2 and GHS. No blur exterminator or sharpening

 

Edited September 7, 2023 by 900SL

[focaldepth]

My take on the Cygnus Loop. Taken at Dalby Forest on 21/8/23, Borg 60, HEQ5,ASI2600, Ha, Oiii, Sii, RGB. All 300s exposures.

Just under 2 hours on each narrowband and Just under 1 hour on each RGB.

Dark and gloomy colours.

[Graeme]

This is Caldwell 12 - The Fireworks Galaxy. Which is in Cygnus but it sits on the boundary with Cepheus. Its distance from Earth is about 25.2 million light-years. Ten supernovae have been observed in this galaxy in the 20th and early 21st century. This is about ten times the rate observed in our Milky Way galaxy, even though the Milky Way has twice as many stars. For this reason, it is known as the "Fireworks Galaxy".

This image comprises 42 x 4 minute LRGB (21L 7R 7G 7B) exposures giving a total integration of just under 3 hours over three nights as I struggled with 95% humidity playing havoc with my USB connections!

 

 

[powerlord]

NGC6820 - Not one I've seen much of. This was taken over 4 sessions - 2 for RGB, one for Ha/Oiii (L-ultimate) and one for Sii/Oiii (D2). Shot on my 200pds with Baader mk3 CC and asi2600.

I got about 2 1/2 hours worth of Ha, the same for the Sii and about double that for the RGB. As it was mostly done with 1/2 a moon still in the Sky, and intermittently cloudy, lots of subs got deleted.

I struggled for a while getting a good blend of all the data in Affinity Photo but in the end I think I managed to bring some of the Sii in and oii in ok. I used the 'natural' colours for the NB by using a wavelength to RGB calculator so the resultant blend of NB into broadband data should be as you would see it in RGB given enough integration time I think.

I decided to rotate it from the usual 'trunk pointing left' orientation as I think it looks better framed this way around.

Edited September 9, 2023 by powerlord
star tweek

[powerlord]

The Crescent Nebula in wide-field.

about 11 hours of wideband RGB data, and 7 hours of Ha/Oiii (L-ultimate) data. Shot with redcat and asi2600 over the past 2 weeks.