AAPOD2 Image Archives

Sort 2024 By Month: January | February | March | April | May | June | July | August | September | October | November | December

2024, April 2024 Charles Lillo 2024, April 2024 Charles Lillo

LoTr 5 to NGC 4725 - A Two Panel Mosaic

ourney through the celestial wonders from LoTr 5 to NGC 4725, traversing a vast expanse of the cosmos captured in a captivating two-panel mosaic. Delve into the intricate details of distant galaxies, star clusters, and nebulae that adorn the cosmic landscape.

In this expansive mosaic, LoTr 5 and NGC 4725 emerge as focal points of cosmic beauty. LoTr 5, a lesser-known object, shares its celestial space with NGC 4725, a magnificent spiral galaxy. Each panel reveals a unique glimpse into the mysteries of the universe, inviting viewers to contemplate the vastness and complexity of the cosmos.

Read More
May 2022, 2022 Jason Matter May 2022, 2022 Jason Matter

NGC 4725 & Company - Trio of Galaxies in the Berenices Coma

Image Description: Today I want to share with you the image of a trio of galaxies that are located in the Berenices Hair.

NGC 4725 is a mid-sized galaxy located in the constellation Coma Berenices. This galaxy isn't as well known as others but with a class 10 magnitude it's worth visiting, curious to see that it only has a spiral arm, which also gives the feeling of squeezing the core of NGC 4725.

NGC4747 is a rather peculiar galaxy, in this image we can see it in the upper right, the shape reminds me of a bird flying over the beautiful island NGC 4725. This galaxy shows symptoms of having had some kind of gravitational interaction, that look like the wings of a bird could be tidal currents, therefore it is considered that NGC 4747 is one of the galaxies companion to NGC 4725, the whole gravitational ction between both and has distorted the spiral structure NGC 4747

Copyright: Alberto Pisabarro

Read More
April 2022, 2022 Jason Matter April 2022, 2022 Jason Matter

NGC 4725

Image Description and Details :

Telescope: Celestron C11
Focal length: 1800mm @ f6.3
Starizona SCT Reducer/Corrector
Mount: CGX
Camera: ASI294MC-P
Filters: Optolong L-eNhance/UVIR cut
Autoguiding: Celestron OAG
Guide camera: ASI174mm mini
Integration time: 8 hours
Exposure time: 120 seconds
Calibration: 50 Darks, 30 Flats/Dark Flats
Bortle 5

Software:
NINA
PHD2
PixInsight

Copyright: Ralph MacDonald

Read More
2022, January 2022 Jason Matter 2022, January 2022 Jason Matter

Cosmic perspective : NGC 4725 Group & LoTr 5

Image Description and Details :

Here is a mosaic of 2 images with the main galaxies of the group NGC 4725 (located at about 55 million light-years) and the planetary nebula LoTr5, discovered in 1980 and located "only" at 1650 light-years from us!
The small galaxy NGC 4712, to the right of NGC 4725, is located more than 200 million light-years away.

A beautiful "cosmic perspective" with these different objects!

Mosaic of 2 images in LRGB + OIII. !

The framing of the first image was not intended for a mosaic with the nebula field, so an important part of the final field had to be cropped. The difference in sky quality resulted in a poor homogeneity of the sky background and a difficult connection between the two images, which did not facilitate the processing of this one.

A lot of time spent on processing to achieve a homogeneous result and highlight the nebula.

LRGB+OIII version
TSA102 - AtikOne6.0 - AZEQ6
L : 32 x 600s bin 1
RGB : 72 x 300s bin2
OIII : 18 x 600s bin2
Total : 14h20

Copyright: Jean-Baptiste Auroux

Read More
2020 Jason Matter 2020 Jason Matter

One-Armed Spiral Galaxy - NGC 4725

Image Description and Details :

While most spiral galaxies, including our own Milky Way, have two or more spiral arms, NGC 4725 has only one. Here, the solo spira mirabilis seems to wind from a prominent ring of bluish, newborn star clusters and red tinted star forming regions. The odd galaxy also sports obscuring dust lanes a yellowish central bar structure composed of an older population of stars. NGC 4725 is over 100 thousand light-years across and lies 41 million light-years away in the well-groomed constellation Coma Berenices. Computer simulations of the formation of single spiral arms suggest that they can be either leading or trailing arms with respect to a galaxy's overall rotation. Also included in the frame, sporting a noticably more traditional spiral galaxy look, is a more distant background galaxy (text taken from NASA APOD).

Martin first imaged NGC 4725 with a CDK17/Apogee U16M but later returned to add very high quality luminance acquired with the same scope but with an SBIG STXL11002 and adaptive optics. That result is shown here, but reassembled and reprocessed using new techniques developed in Adobe Photoshop.

Copyright: Martin Pugh

Read More