MarsG76
-
Posts
6,835 -
Joined
-
Last visited
-
Days Won
11
Content Type
Profiles
Forums
Gallery
Events
Blogs
Everything posted by MarsG76
-
I had many moments like that, but the clouds will pass... think of all of the great astronomy nights you had while it was clear, and they will return.. but if you give up, know this.. the moment you sell your gear, it'll seem like it's crystal clear nights every night ... want to risk that?
-
Hi All, Sharing another of my completed southern sky object images.... The nebulae in this imaged area are is not a popular group of objects or area of the sky being imaged by amateurs... located in the constellation Corona Australis, between γ and ε Coronae Australis and features NGC6726, NGC6729, NGC6727, NGC6723 and IC4812. I suspect that the lack of interest is area is dark and not as vibrant as other more well known and popular objects, but the combination of reflection nebulae crossed by dark nebulae made an interesting image IMHO. I imaged a close up on the blue reflection nebulae back in August 2020 and wanted to expose it at a lower focal length to see what surrounds the blue nebulosity. This image was exposed with a QHY268M through a simple doublet 80mm refractor (at 500mm focal length) over 2 and a half nights, as a 2 plate (heavily overlapped) mosaic so that I would only need to crop out the most distorted edges, retaining the whole original frame size... exposures started just after midnight on 10 July and being completed on the morning of 12 July 2023, for a total integration time of 17 hours and 20 minutes, 8 hours and 40 minutes per plate. Thanks for looking, Clear Skies, MG
-
- 7
-
-
- corona australis
- nebula
- (and 6 more)
-
From the album: Deep Sky Imaging
These nebulae are located in the constellation Corona Australis, between γ and ε Coronae Australis and features NGC6726, NGC6729, NGC6727, NGC6723 and IC4812 and is not a popular group of objects or area of the sky to be imaged by amateurs. I imaged a close up on the blue reflection nebulae back in August 2020 and wanted to expose it at a lower focal length to see what surrounds the blue nebulosity. This area is dark and not as vibrant as other more well known and popular objects, but I think that the combination of reflection nebulae crossed by dark nebulae made an interesting image. This image was exposed through a 80mm f6.3 refracting telescope with a QHY268M camera for a total exposure time of 17 hours and 20 minutes. This image was exposed with a QHY268M through a simple doublet 80mm refractor (at 500mm focal length) over 2 and a half nights, as a 2 plate mosaic but heavily overlapping so that I would only need to crop out the most distorted edges, retaining the whole original frame size... exposures started just after midnight on 10 July and being completed on the morning of 12 July 2023, for a total integration time of 17 hours and 20 minutes, 8 hours and 40 minutes per plate.© Mariusz Goralski
-
It looks great... doesn't look over processed at all.
-
Awesome details... love it.
-
Hi All, Sharing with you a quickie image of my Jewel Box Cluster. It is a open star cluster located in the constellation Crux, given the designation "Kappa Crucis". It's windy, and the seeing is horrible, BUT the sky is crystal clear, so I picked a easy and bright target so that a clear sky wasn't wasted... it's a bit soft, but the best guiding I was getting was according to PHD2 was between 1.9 & 2.2" RMS. Imaged on my C8 at f6.3 with the QHY 268M in LRGB. 3hours and 50 minutes of luminance subs and 59 minutes of RGB color data. Clear Skies, MG
-
- 8
-
-
- ngc 4755
- jewel box cluster
- (and 1 more)
-
From the album: Deep Sky Imaging
The Jewel Box (also known as the Kappa Crucis Cluster, NGC 4755, or Caldwell 94) is an open cluster in the constellation Crux. This cluster was named the "Jewel Box" by John Herschel when he described its telescopic appearance as "...a superb piece of fancy jewellery". It is easily visible to the naked eye as a hazy star about 1.0° southeast of the first-magnitude star Mimosa (Beta Crucis), given the designation "Kappa Crucis". It is only seen in the Southern Hemisphere from March to August. Imaged using a 8" SCT at f6.3 (1280mm focal length), with a QHY268M camera. The total integration time for this image through all of the LRGB filters was 4 hours and 49 minutes during a windy night when seeing was terrible. Exposures: L:34x300s & 20x120s @ FW:31, R:12x60s G:10x120s B:9x180s @ HCG:62/OFS:25© Mariusz Goralski
-
VERY NICE
-
Also the coating on the C8 corrector plate rejects a lot of UV wavelength, so we're upto a quadruple whammy.
-
It's in other images online, including photos imaged by pros on pro telescopes, so I guess it's a jet... It's also clear as day on my HAlpha stack, so I say it's not an artifact but a jet/some nebulosity in the FOV.
- 12 replies
-
- 1
-
-
- ngc 5128
- centaurus a
- (and 3 more)
-
Yes... I stand corrected.... thanks.
-
Ah, so there is a trade off in resolution for brightness... I guess it depends what's more important for a particular project... speed or detail... either system has it's advantages and disadvantages.
-
That is SO cool... the animation of the clouds definitely makes this the best earth based imaging work of Venus I have seen in a very long time...
-
Love the detail in the atmosphere... this image has a 3D look to it...
-
Excellent cloud detail...
-
I probably don't need that much integration time to result in the same or similar results, but having a permanent telescope setup allows me to spend extra time exposing through each filter... plus the more subs I stack the greater the SNR resulting in less noise to deal with in processing... I don't think that a C8 at f6.3 is that slow unless comparing to a f2 system like a Hyperstar or RASA with the same primary light gathering mirror... that said, those systems do collect photos from a much wider FOV so I'm not so sure that there would be more signal in an area that is cropped down to the same FOV as is the C8 f6.3 system... although a f2 system at 1280mm focal length would be a beast of a telescope but that would mean that the primary mirror is 2560mm, almost 101", in diameter.
-
A good way to look at it...
-
Hello All, Sharing with you another image that I finished processing as I'm slowly going through my back log of exposures. This is Centaurus A (NGC 5128), a galaxy in the constellation of Centaurus 13 million lightyears away. NGC 5128 is one of the closest radio galaxies to Earth and is also the fifth-brightest in the sky, making it an ideal amateur astronomy target. The galaxy is only visible from below very low northern latitudes but is best seen or imaged from the southern hemisphere. This photo was imaged using a Celestron C8 and a QHY268M at f6.3 1280mm focal length. Total integration time was 35 hours and 40 minutes, 48x300sec luminance subs through a neodymium filter, 27x120s red, 27x180s green, 27x300s blue, Hα:36x300s, OIII:31x600s & UV:21x1800s filters. Why 35 hours? Because I spent 10.5 hours on exposing the galaxy through my UVenus filter as an experiment to see if I'll pickup anything more than the usual, aiming for a hint of it's (X-Ray) jets, hoping that there might be some kind of a UV remnant of them captured, but NO such luck... the UV data was extremely weak and all it added to the image was very faint deep blue highlights on a very small number of places... so subtle that the image would not be noticed as having anything less if I didn't expose the UV subs... I'm suspecting that the SCT corrector cuts out most of the UV light too... so failed but and experiment I'm glad I did because otherwise I'd be left wondering. Thank for looking, Clear Skies, MG
- 12 replies
-
- 18
-
-
- ngc 5128
- centaurus a
- (and 3 more)
-
From the album: Deep Sky Imaging
Centaurus A (NGC 5128) is a galaxy in the constellation of Centaurus 13 million lightyears away. NGC 5128 is one of the closest radio galaxies to Earth and is also the fifth-brightest in the sky, making it an ideal amateur astronomy target. The galaxy is only visible from below very low northern latitudes but is best seen or imaged from the southern hemisphere. This photo was imaged using a Celestron C8 and a QHY268M at f6.3 1280mm focal length. Total integration time was 35 hours and 40 minutes, 48x300sec luminance subs through a neodymium filter, 27x120s red, 27x180s green, 27x300s blue, Hα:36x300s, OIII:31x600s & UV:21x1800s filters.© Mariusz Goralski
-
Hello all, Sharing another completed image in my back log of imaged data, this is IC 4592 also known as the "Blue Horsehead" Nebula, which is a reflection nebula which is lit by the star "Nu Scorpii" in the constellation of Scorpius. Captured with a QHY268M camera through a Sigma 150mm f2.8 prime lens in LRGB color and Hydrogen Alpha narrowband on the nights between 10 & 17 June 2023. The total integration time was 20 hours and 20 minutes. Thanks for looking & Clear Skies, MG
-
- 13
-
-
- blue horsehead
- nebula
- (and 1 more)
-
Hello, Another image I processed from a quickie exposure after my observation session on 25th June... I located this globular cluster in the eyepiece in my 14" Dobsonian (among observing other objects) and it looked absolutely fantastic, so after I concluded my observation, I powered the C8 and decided to image this great specimen of an eyepiece vision. After 12 x 300 second luminance subs, the winds really picked up, forcing me to end imaging with only 1 hour of luma data. As I stacked what I had, I realised that I imaged this globular a bit over a year ago... completely forgot about it... and still had the raw RGB subs on the HDD from back than... so I aligned that data to tonights luminance resulting in this shared image. NGC 6752, also known as the Great Peacock Globular or the Pavo Globular Cluster, is a globular cluster in the constellation Pavo. It is the fourth-brightest globular cluster in the sky, after Omega Centauri, 47 Tucanae and Messier 22, respectively. It is best seen from June to October in the Southern Hemisphere. Imaged using a 8" SCT at f6.3 (1280mm focal length), with a QHY268M camera. The total integration time for this image through all of the LRGB filters was 4 hours and 12 minutes. Exposures: L:12x300s @ FW:31 used as luminance from last years R:20x120s G:19x180s B:19x300s @ HCG:62/OFS:25 data. Thank for looking, Clear skies, MG
-
- 6
-
-
- peacock cluster
- globular
- (and 1 more)
-
From the album: Deep Sky Imaging
IC 4592 (also known as the "Blue Horsehead" Nebula) is a reflection nebula which is lit by the star "Nu Scorpii" in the constellation of Scorpius. Captured with a QHY268M camera through a Sigma 150mm f2.8 prime lens in LRGB color and Hydrogen Alpha narrowband on the nights between 10 & 17 June 2023. The total integration time was 20 hours and 20 minutes.© Mariusz Goralski
-
Hi all, Sharing with you my last processed image as I'm slowly going through my aquired data from the last month. This section of sky, located in the constellation of Scorpius near the star Zeta Scorpii, and looks like a silhouette of a wolf or a werewolf creature in long exposure photographs hidden in faint nebulosity. This nebula is known as the Wolf Nebula or the Fenrir Nebula from Norse mythology but officially known as SL 17 and lies very close to GUM 55 and "The Dark Tower" in Scorpius and not a popular object among amateur astronomers. The dark nebula region in the photo is a type of dense interstellar cloud and dust in space that obscures the light from the background stars creating the shape of the "Wolf". The reddish sections are Hydrogen Alpha emissions, populated by many stars of differing types and colors as seen in the photo. I exposed this photo across multiple nights, from 18th - 23rd June 2023, from my backyard that is under a Bortle 4 semi rural sky through a C8 SCT at f6.3 using a QHY268M astronomy camera. The total integration time was 23 Hours and 34 minutes in HAlpha, SII and OIII Narrowband for the nebulosity and through RGB filters for the star colors. Clear Skies, MG
-
- 7
-
-
- wolf nebula
- gum 55
- (and 2 more)
-
From the album: Deep Sky Imaging
This section of sky, located in the constellation of Scorpius near the star Zeta Scorpii, and looks like a silhouette of a wolf or a werewolf creature in long exposure photographs hidden within faint nebulosity. This nebula is known as the Wolf Nebula or the Fenrir Nebula from Norse mythology but officially known as SL 17 and lies very close to GUM 55 and "The Dark Tower" in Scorpius and not a popular object among amateur astronomers. The dark nebula region in the photo is a type of dense interstellar cloud and dust in space that obscures the light from the background stars creating the shape of the "Wolf". The reddish sections are Hydrogen Alpha emissions, populated by many stars of differing types and colors as seen in the photo. I exposed this photo across multiple nights, from 18th - 23rd June 2023, from my backyard that is under a Bortle 4 semi rural sky through a C8 SCT at f6.3 using a QHY268M astronomy camera. The total integration time was 23 Hours and 34 minutes in HAlpha, SII and OIII Narrowband for the nebulosity and through RGB filters for the star colors.© Mariusz Goralski
-
From the album: Deep Sky Imaging
NGC 6752, also known as the Great Peacock Globular or the Pavo Cluster, is a globular cluster in the constellation Pavo. It is the fourth-brightest globular cluster in the sky, after Omega Centauri, 47 Tucanae and Messier 22, respectively. Best seen from June to October in the Southern Hemisphere. Imaged using a 8" SCT at f6.3 (1280mm focal length), with a QHY268M camera. The total integration time for this image through all of the LRGB filters was 4 hours and 12 minutes. Exposures: L:12x300s @ FW:31, R:20x120s G:19x180s B:19x300s @ HCG:62/OFS:25© Mariusz Goralski
