elpajare

Thank you both for the comments Seen in real color this galaxy looks more like a jellyfish than a bear footprint. You're right There is no secret in this shot, the 8 "for a telescope is very common in EEVA equipment and the camera is of Chinese origin with an IMX294 sensor without cooling very current too. I have applied flats and darks and I have taken the picture with everyone the default parameters with 25 "exposure which is what I always use for this type of object I was fortunate to have a night with good seeing and the Startools treatment helped to recover the smallest details.

This galaxy is very visited at this time of year. What many ignore is that it is number 6 of the Arp catalog of peculiar galaxies. This especially, is classified as Low-surface brightness spiral and the challenge according to the authors of the book The Arp Atlas of Peculiar Galxies is to detect the horsehoe-shaped ring with a mottled bar inside. I have tried, at least This photo has been taken with 15 exposures of 25 "with a combination TSoptics RC 8" + Risingcam IMX294 C non cooled + UVIR filter with the Risingtech capture software and treated with Startools

The result depends a lot on the sky conditions. If it is clear and with good seeing the 8 "of my TSOptics RC they get to capture a lot of detail. If I had a telescope of more diameter it would probably be better but they weigh too much and I can't handle them. I have to settle for this one. If the seeing is bad ....... nothing can fix it

As always a good selection very well resolved. Congratulations

This is a very interesting object, thanks for sharing

Good job, thanks for sharing. Some of the galaxies have a very difficult magnitude to capture and you have achieved it brilliantly

There is everything, sometimes there are clear and something can be done It is only possible with EEVA, if I did astrophoto it would have been a while since I would have released

NGC 2633 is ARP 80 from the catalog of Peculiar Galaxies of Arp. It is classified as "Spiral galaxy with a partner of high surface brightness in one arm". The challenge of observation is to detect these bright spots in the northern part of the halo. In the color photo it can be seen well but in the inverted one, below, it looks better.

Without further treatment of the original image, it would have been impossible to detect these very weak bifurcated branches of the galaxy. This makes this Forum a very special place to share this type of work. Thank you for commenting and viewing the images.

Arp's notes: Bifurcated arm does not start at end of bar Challenge: The split arm TSoptics RC8 + Risingcam IMX294C+ UVIR 15x25" + Startools

The IMX294 C chip is very sensitive and for this type of weak objects it works well. Thanks for the feedback Mike......I think I see UGC 957 in your photo !

ARP 157, NGC 520 and companion. Disturbed with interior absoption Challenge: Faint tails N and S and companion UGC 957 RC 203 + Risingcam IMX294 no cooled+ UVIR 15x25" stacked with Risingcam software+ Startools

Ritchey-Chretien 203 mm+ Risingcam IMX294 no cooled+ UVIR filter 15x 25 " , Risingtech capture soft, gain máx. all parameters by default Processed with Startools

Large sensors and many megapixels are fashionable but I am also of the opinion that most objects can be seen in great detail with these small ICX 829 or IMX 224 sensors. As an example, in the northern hemisphere there are 1.472 objects of magnitude equal to or less than 12. Objects considered "large and bright" ( more than 20 arc. min), appropriate for these mega-sensors are only 154 ( 10.6%). If we go to higher magnitudes ALL objects are small and weak in this way small and sensitive sensors well combined with a telescope is much more useful for fans who dont want to limit themselves to the "big and bright". The most coveted objectives of astrophotographers and suitable for this type of mega sensors are the bright nebulae and these only represent 7% of all the observable objects in the northern hemisphere.

The lighter parts of the edges can be eliminated by applying Dark Fields. The software that I use ( and many others) captures and applies it automatically. You can also choose a color chip and you will save triple ( or quadruple !) RGB-L exposure. I have used the IMX224 which is very cheap with a Newton 8 "f4 and gives very good results in small and weak objects such as galaxies, globular clusters and planetary nebulae. With this combination the exposures are 15 seconds for this type of objects with maximum gain. I wish you a good choice

Great job, congratulations Martin !

I agree with you on the type of objects to observe / photograph. This was one of the reasons to introduce me to the EEVA. I have self-limited, for the time being, objects of magnitude 12 or less. If you prefer to add some color to your observations there are a few current chips that give very good results with short exposures and stacking.

I am going to say one thing that many will not like but I think that time will give me the reason The traditional astrophotography will be reduced to a small group of selected practitioners while the EAA or NV will attract many other people interested in seeing what's up there. Electronics is the future

I would like this to be a place where we could share our experiences on how to get a better vision of celestial objects without being subject to more rules than the essential ones. Like so many others, I went from visual observation to an electronically enhanced observation in order to enjoy the vision of objects that otherwise were difficult for my human eyes to see. Welcome the electronic help The problem begins when what we can see on a screen with short exposures and stacking is not allowed to be improved later electronically. Why? We know the techniques of astrophotography and the material that is used and they are not the same as those that we use. Where can we publish our modest results without being banned, despised or simply ignored? I hope this can be the ideal place!

Many thanks for your work, Chris.

Thanks for share. Very interesting.