ShineOn

I read a comment the other day where someone (jokingly) suggested that Russell Croman’s Blur Xterminator tool was merely platesolving your image and replacing it with Hubble data. The results it gives are not quite that good….but it’s very good! What he has achieved with this and his other tools has made the processing of Astro images a far more straightforward and rewarding process and helps bring out the best in your hard won data. So this is 10 hours of SHO data on (most of) The Heart Nebula, taken with the Esprit 150 reduced by 0.77x to 808mm focal length @ f5.4 with the ZWO 2600MM Pro, Antlia 3nm filters, shot over 2 nights during the recent UK cold spell. The stars were provided by 10 minutes each of RGB data. Flats and Dark Flats were taken. I didn’t have a set of darks at -30C but I don’t think this image has suffered for that. It’s processed entirely within Pixinsight. After an initial crop to reduce stacking artefacts and DBE per channel, I let BXT do it’s thing. I supplied it with an accurate PSF profile by using the Pixinsight script from https://www.skypixels.at/pixinsight_scripts.html. What it did with the stars was remarkable – I’ve never had such tiny RGB stars! I did dial back the non-stellar sharpening from default but improvements were obvious, especially when zoomed in. I then did an EZ soft stretch on the 3 narrowband stacks followed by StarXterminator on all 3. An LRGB combination followed using 50% of Ha as Luminance and 75% Ha in the Green channel, to give a Cuiv style Hubble palette blend. Inverting the image and using SCNR removed a slight magenta background. I then played around with curves to give a colour balance I was happy with. Some gentle LocalHistogramEqualization and DarkStructureEnhance were used to add a bit of contrast. I then used NoiseXterminator and finally added back the RGB stars using the Rescreen pixelmath method. So in summary I’d heartily recommend BlurXterminator as an additional processing tool – it really is a game changer. If nothing else, it’s probably just killed Topaz stone dead! Thanks for looking, Simon Higher resolution: https://www.astrobin.com/54q3lv/ Instagram: https://www.instagram.com/sportysi/

In the year 1054AD, Chinese observers witnessed and documented a supernova in our night sky. The explosive fallout from this shone so brightly it was even visible in the daytime for many days. The remnants of this event formed what we now call the Crab Nebula as seen in this photo I took. It also happens to be the first object that the French astronomer Charles Messier catalogued as part of his list of objects to avoid being mistaken for comets, when he independently discovered it in 1758. Hence it's designation of M1. The Crab lies some 6500 light years away, so the actual moment of supernova occurred around 5500 BC. Unusually for a deep sky object it is possible to see changes in it's appearance over a few years, as the nebula is still expanding at around 1000km per second. Have a look at this 10 year timelapse movie showing this! (https://www.astrobin.com/327338/0/) RGB data was collected to produce natural star colours but the bulk of the photons were collected through 3nm Antlia narrowband filters. The Sky-Watcher Esprit 150 is starting to earn it's keep now! Gear used: Imaging telescope: Skywatcher Esprit 150ED Pro Imaging camera: ZWO ASI2600MM-Pro Mount: Skywatcher EQ6-R Pro Guiding camera: ZWO ASI224 MC Accessory: ZWO EAF Electronic Auto Focuser Switch: Pegasus Pocket Powerbox Advance Image details: Antlia 3nm Ha: 24 x 600 secs Antlia 3nm Oiii: 19 x 600 secs Antlia 3nm Sii: 21 x 600 secs Antlia RGB: 5 x 60 secs per filter (for stars) Gain 100 @ -25C bin 1x1 Total integration: 10 hrs 55 mins Darks: 30 Flats: 30 per filter Flat darks: 30 per filter Bortle Dark-Sky Scale: 4.00 Imaging dates: Several dates between 20/01/22 and 20/03/22 Imaging location: Bakewell, Derbyshire, UK Data acquisition: NINA Processed: Pixinsight, Photoshop, Topaz Denoise Higher resolution: https://www.astrobin.com/yyffnk/ Instagram: https://www.instagram.com/sportysi/

The Crescent and Soap Bubble nebulae in Cygnus. Many hours of imaging time were spent on this object over the course of multiple nights in May, using my dual imaging rig. Narrowband filters were used to create an HOO base image (minus the stars) and RGB data was used for the stars. The Soap Bubble nebula (bottom right) is a planetary nebula and is so faint it was only discovered in 2007. Image details: Takahashi FSQ85 / Atik 460ex Ha - 35 x 20 mins Oiii - 35 x 20 mins Skywatcher MN190 / ZWO ASI 2600MC Pro RGB - 299 x 5 mins Total image time: 48 hours 15 mins Guided with ZWO ASI 224 MC / phd2 Data captured with Sequence Generator Pro Stacked with DSS Aligned with Registar Processed with PS CS5

The bright central core of the Ring Nebula, M57, is a famous planetary nebula easily observed in a small telescope. It’s the remnants of a dying star, shedding material into space. Recently though I set myself the challenge of capturing the much less often imaged outer halos of M57. With a lot of deep narrowband exposure time over 4 different nights and almost as much processing afterwards, I was very happy to have achieved this. The inner halo (discovered in 1935) surrounds the familiar bright core and is around 5 times fainter than it. The outer halo is some 5000 times fainter than the central ring and was only recently discovered when space telescopes like Hubble were pointed at the object. You can make out faint wisps of this to the left and below the inner halo in particular. The galaxy in the top right is IC 1296, some 220 million light years away. The image is a combination of LRGB broadband filters for the bright core and Ha and Oiii narrowband filters for the outer halos, for a total of over 18 hours imaging time. As the object is very small I used the 2x drizzle function in DSS. Each stack was then processed separately and then combined in photoshop for further processing. For other astro photos follow my instagram @sportysi: https://www.instagram.com/sportysi/ Image details: Lum - 26 x 3 mins Red – 19 x 3 mins Green 24 x 3 mins Blue – 25 x 3 mins Ha – 30 x 20 mins Oiii – 12 x 20 mins Total image time: 18 hours 42 mins Skywatcher MN190 / Atik 460ex Guided with ZWO ASI 224 MC / phd2 Data captured with Sequence Generator Pro Stacked with DSS using 2x drizzle Aligned with Registar Processed with PS CS5

Full frame sensor + Redcat = HUGE!

The North America Nebula and Pelican Nebula, in Cygnus. For the North America region I used my Ha data from 2016 taken at higher resolution, aligned it with Registar and combined as a luminance layer. Imaged over 2 nights last week: 424 x 60s at ISO 1600 unguided Total image time – 7 hours 4mins Modified Sony A7s William Optics RedCat 51 Optolong l-Pro clip in filter iOptron Sky Guider Pro Stacked in Sequator, Processed in PS CS5

The Veil Nebula in Cygnus is one of the best known supernova remnants in the sky, the star that caused it exploding around 7000 years ago. It’s a huge object (about 6 full Moon widths) and although I’ve imaged separate parts of it before, I haven’t had the gear to capture it all in a single frame. But this is possible now with the 250mm focal length Redcat and the full frame Sony. Imaged over 2 nights: 142 x 120s at ISO 1600 unguided 34 x 240s at ISO 1600 guided with ASI 224MC / phd2 Total image time – 7 hours Modified Sony A7s William Optics RedCat 51 STC Duo narrowband clip in filter iOptron Sky Guider Pro Stacked in Sequator, Processed in PS CS5

The obvious benefit of running a dual rig setup is that you can image the same target with two different telescope / camera combinations simultaneously. The data for these widefield views of M51 was captured at the same time as the close up image I posted a couple of days ago. I could have combined the data but I knew I had enough from each setup to simply produce a 2nd, very different image. The galaxy doesn’t have quite the resolution but I prefer the colours in this version and the way M51 appears to float in its surroundings. The APS-C sized chip of the ZWO camera coupled with the Tak gives a field of view of 3 x 2 degrees, so even the wider view of M51 seen here is still a fair crop. Simon Image details: 154 x 5 mins With Takahashi FSQ85 @f5.3 / ZWO ASI 2600MC Pro Total image time: 12h 50mins Guided with ZWO ASI 224 MC / phd2 Data captured with Sequence Generator Pro Stacked with DSS Processed with PS CS5

Thanks Alan - the best thing I did for my 190 was replace the stock focuser with a Moonlite - but the connection is still a standard nosepiece into the tube connected to my Atik EFW

Thanks Geof - yes I've seen it on your superb M51 too, much clearer in fact. I googled it's catchy name and it threw up a couple of amateur sites having the distance as stated or similar. The NED has it at 11.036 Gly http://ned.ipac.caltech.edu/cgi-bin/objsearch?objname=SDSS+J133004.71%2B472301.0&extend=no&hconst=73&omegam=0.27&omegav=0.73&corr_z=1&out_csys=Equatorial&out_equinox=J2000.0&obj_sort=RA+or+Longitude&of=pre_text&zv_breaker=30000.0&list_limit=5&img_stamp=YES

This is M51, the Whirlpool Galaxy….THE grand design spiral galaxy! Or more accurately it’s M51 and NGC 5195, as both galaxies are interacting with each other some 25 million light years distant, connected by a dusty tidal bridge. Captured over several nights last week, I framed the image to include IC 4263, the galaxy in the top right corner. Image details: Luminance – 50 x 5 mins and 5 x 10 mins Red – 18 x 5 mins Green – 27 x 5 mins Blue – 26 x 5 mins Ha – 17 x 10 mins With Skywatcher MN190 / Atik 460ex Total image time: 13h 45mins Guided with ZWO ASI 224 MC / phd2 Data captured with Sequence Generator Pro Stacked with DSS Aligned with Registar Processed with PS CS5 Upon researching some of the faint fuzzies also captured, I came across reference to Quasar SDSS J133004.71+472301.0, located nearby. Scanning my image I was very pleased to locate this object, which according to info on the web is very faint at Mag 20.3 and some 11.8 billion light years distant, making it the furthest object I have recorded. The attached inverted luminance stack shows it up easiest….check your M51s! Simon

Thanks everyone. I have to set up / tear down after each dry/clear spell and always need to collimate at the outset. But using a hotech laser collimator is a pretty quick and straightforward process.

This is M94, the Croc’s Eye or Cat’s Eye Galaxy in the constellation of Canes Venatici, around 15 million light years away. It was an interesting one to process with it's bright central core but much fainter outer halo. Layer mask techniques were used to selectively process and expose this halo whilst retaining detail in the galaxy core and dust lanes. Quite a few faint fuzzies in the background too. Image details: Luminance – 37 x 5 mins with Skywatcher MN190 / Atik 460ex RGB – 7 x 5 mins per channel with Skywatcher MN190 / Atik 460ex Total image time: 4h 50mins Guided with ZWO ASI 224 MC / phd2 Data captured with Sequence Generator Pro Stacked with DSS Aligned with Registar Processed with PS CS5

I'd like a "smallish" refractor like that! 😆, Great image.

One swallow may not make a summer but the appearance of bright nebulae in the Cygnus region may well! This is a widefield view of some of the jewels to be found in that region of the sky, shot from my back garden in the early hours of 16th April using my ‘grab and go’ set up. In the photo you can see the North American Nebula on the left, with the Pelican nebula immediately to its right. Just right of centre is the Butterfly Nebula and further right is the Crescent Nebula, looking tiny at this focal length. Plus a lot of stars, as we look towards the densely packed galactic core. Image details: 101 x 60secs at ISO 1600 unguided Modified Sony A7s Samyang 135mm f2 @f2.8 Optolong l-Pro light pollution clip in filter iOptron Sky Guider Pro Stacked in Sequator Processed in PS CS5