elpajare

Arp 315 is a small group of galaxies in Lynx located about 300 million light years from our solar system. It is quite easy to distinguish  on a night of good seeing because they are of magnitude between 11 and 14,

Arp's notes: Companion E (NGC 2831) is quite compact.

Chhallenge: Separate 2831 and 2832

TSoptics RC8 + Risingcam IMX294C uncooled+ Risingcam captura soft

15x25" stack+ DF&FF correction+ Startools post process

10 hours ago, roelb said:

 

Last year I was also trying to image the "ARP galaxies".

Up to now I have recorded 207 of them.

 

Do you have 207 Arp galaxies photographed?

It's fantastic, I'm looking forward to seeing your results, post them here, please ..

Here you see the details perfectly. The 10 "are noticed.

Thank you for sharing and comparing results.

Good shot. The nucleus of this galaxy seems double, probably a superimposed star of our galaxy? Arp doesn't mention it.

You have captured it very well, you can even appreciate a little the faint filaments to the E that appears as a challenge in this observation

This nebula had always resisted me, this time the good seeing has helped me. It has made me excited to share it here. Thanks for the comment Rob

This unusual planetary nebula is a very faint, rather large, irregular half-moon-shaped object, with apparent dimensions of 10.2 arc minutes. As it is so big, its surface brightness is very low, with magnitudes between +16 and +25 reported. Its NE end is brighter. Several stars are embedded in the nebula. The Medusa Nebula is estimated to be over 4 light-years across, and some 1,500 light-years away. 

TSoptics RC8+IRisingcam MX294 C uncooled

15x25" stack+Dark&flat sub.+ UVIR filter

This is much better, I even think you have been able to capture the "object" and NGC132A mentioned in the Atlas of Peculiar Galaxies of Kanipe & Webb.

Mike, nice chains of faint and distant galaxies. I love these little galaxies

Outstanding shots, congratulations

Your higher latitude makes it more difficult, anyway it is a good shot

It Is a spiral with LSB companion on arm. Is mag 10.1, 7.5'x6.5' and SAB (rs)c tipe.

The challenge observation is to see texture in the arms and assymety of the companion.

In the inverted version it can be seen quite well. I have also been able to capture the "object" that Arp mentions probably an HII region.

This galaxy is very low on the horizon and you can only see a few days of good seeing. Today it was.

TSOptics RC 8"+ Risingcam IMX294C uncooled+ UVIR

20x15" stacked+ Dark&Flat subs.

Thanks for your comments, Rob.

The telescope is a Ritchie-Chretien 8 "and f8 TSoptics with a theoretical resolution, combined with the IMX294 chip, 0.58 arc. Sec per pixel. I don't use reducers and I only have a UVIR filter on.

This is the original left the camera. It is a 6 mb file in .jpg as I always use.

This is another object that has always been difficult for me. This year, with new equipment I have tried again and I am not disgusted with the result. It is certainly not an astrophoto but as an electronically enhanced visual observation it may be worth it.

IC 2118 is an interstellar cloud of fine dust grains, about 900 light-years from Earth. It is illuminated by the nearby supergiant Rigel. Its bluish hue is caused not only by Rigel's color, but also because dust grains in the nebula reflect blue light more efficiently than they do red. The same physical process causes Earth's daytime sky to appear blue, although the scatterers in Earth's atmosphere are molecules of nitrogen and oxygen.

NOTE: In the upper part there are satellite marks going through massively (at least 6 satellites) that I tried to erase with not too much luck, I'm sorry.

TSOptics RC8 + Risingcam IMX294 uncooled+UVIR

20x18 stack+Dark&Flat subs.

Startools postprocessed

Thanks for the feedback

The Risingcam IMX224 is available at this link:

https://es.aliexpress.com/item/32827634199.html?spm=a219c.12010612.8148356.20.757428c8rGXO8T

I have always liked this object because of its difficulty, it is at the limit of the possibilities of my gear so I beg your pardon for the poor quality of the photograph.

This planetary nebula makes for a very difficult target due to its very low surface brightness. The bubble of expanding gas is the remnants of the atmosphere of a Sun-like star expelled as its supply of fusion-able core hydrogen became depleted. Although the expanding nebula will fade away over the next few thousand years, the central white dwarf may well survive for billions of years -- to when our universe may be a very different place.

JE-1 lies at RA 07h 57.8m and Dec +53deg 25arcmin. It has a quoted diameter of 400 arcsec and a visual magnitude of 12.1, a size / magnitude combination that gives it a very low surface brightness and makes it such a difficult visual target. It is thought to lie at a distance of around 1,600 light years. For star-hoppers wanting a challenge the best starting point is probably mag 3.5 omicron U.Ma from where there are plenty of mag 6 and 7 stars forming recognizable pattern leading to the planetary 8.4 degrees to the south-west. For some years after its discovery there was confusion between its position and designation with 2 small galaxies NGC 2474 and NGC 2475 which lie half a degree to the south. The matter was resolved by Ron Buta who wrote about it in the 1981 April issue of Sky & Telescope magazine.

British Astronomical Association. 2016, February 28

TSOptics RC 8 + IMX294C+UVIR

20x20 sec+ Dark&flat sub.+gain max.

Post proc with Startools

 JE-1 lies at RA 07h 57.8m and Dec +53deg 25arcmin. It has a quoted diameter of 400 arcsec and a visual magnitude of 12.1, a size / magnitude combination that gives it a very low surface brightness and makes it such a difficult visual target. It is thought to lie at a distance of around 1,600 light years. For star-hoppers wanting a challenge the best starting point is probably mag 3.5 omicron U.Ma from where there are plenty of mag 6 and 7 stars forming recognizable pattern leading to the planetary 8.4 degrees to the south-west. For some years after its discovery there was confusion between its position and designation with 2 small galaxies NGC 2474 and NGC 2475 which lie half a degree to the south. The matter was resolved by Ron Buta who wrote about it in the 1981 April issue of Sky & Telescope magazine.

Good selection of open clusters.
Thank you for sharing them

That is exactly what I like, to be able to capture the light that comes from these enormous distances.

I leave beautiful photos for astrophotographers

The main spiral galaxy is NGC 1209 located at 120 Myl. A little higher up, on your left PGC11658 appears a small spiral galaxy of only 30 kyl in which a hook-shaped spiral arm can be perceived in its N part.
And above and to the left a distant galaxy of magnitude 16.38 located at 1000 Myl.
The three in Eridanus. I hope you enjoy them....

TSoptics RC 8"+ IMX 294C no cooled+UVIR+ 15x25" stack + Startools

Thanks Mike, I'm going to try as soon as the sky clears. The forecasts speak of 2/3 cloudy days but I hope that on Sunday the sky will clear something

Thanks for sharing this photo. I would like to try to locate him, what number of Panstarrs is this?

Very good Mike. If yes, we can see the nuclei of star formation in your photograph.

Galactic collisions do not usually disturb planetary systems as they say. Another thing is for the star to move to a new orbit within the galaxy. Maybe some professional astronomer can clarify it.

Another Arp galaxies, number 279 in Eridanus.

There are two galaxies interacting at 81 million light years and it is classified in the Atlas of Peculiar Galaxies of Arp as "Interacting double galaxies". The photographs of the Atlas of Kanipe & Webb have been taken with a 14 "SCT and 50 minutes of exposure. With an 8" RC and the IMX294C and only 6,25 minutes I have almost achieved the same detail.

The challenge of observation is to detect the arcing arm coming out of the greater galaxy, NGC 1253 towards the small NGC1253A. In the photo they look pretty good, even a small extension of NGC1253A towards the greater galaxy ( better in the inverted version)

The photo has been taken with a TSoptics RC8 "+ IMX294C not refrigerated + UVIR filter with 15x25" stacked and treated as always with Startools, the real person in charge of the details.

It is a challenge photograph. The plume towards the S described by Kanipe & Webb can be intuited.
And the magnitude 14/15 makes them even more difficult. Congratulations Mike

This is my contribution to the subject, a photo taken with an Infinity + Newton 8 "a couple of years ago. This year I hope to repeat the shot these next weeks if the sky allows it.

26x12 "+ Moon = 0% + Altitude = 33º and seeing / FWHM = 3.5

Good shot. It's funny how the galaxy NGC 1889 looks like a star.

The two galaxies, NGC 1889 and NGC 1888, are perfectly visible. The conditions of the sky are not the best but the result is good.

Here, in Begur-Gerona-Spain it is also bad weather, high humidity and FULL MOON!

We will wait for better times....