Celestial hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  Bubble Nebula  ·  HD220057  ·  LBN 548  ·  LBN 549  ·  M 52  ·  NGC 7635  ·  NGC 7654  ·  PK112-00.1  ·  Sh2-162
Getting plate-solving status, please wait...
NGC7635 and M52 (NGC7654), Joe Matthews
Powered byPixInsight

NGC7635 and M52 (NGC7654)

Revision title: Bubble crop

Getting plate-solving status, please wait...
NGC7635 and M52 (NGC7654), Joe Matthews
Powered byPixInsight

NGC7635 and M52 (NGC7654)

Revision title: Bubble crop

Equipment

Loading...

Acquisition details

Loading...

Description

Last night I couldn't decide what to image, I had an off day so indecision ruled my day so to speak, but I couldn't pass up a clear night.  So I thought I would go for NGC7635 and its neighbors for the second time in 2023 and when processing I decided to crop the image.  I think it turned out pretty good.  I used GraXpert and its AI feature for the first time and I think the fit result turned out pretty good.  I didn't save the GraXpert result as stretched.  This morning 2023/11/17 I finally made a decision,  I am going to stick with refractors vs reflectors, due to the fact that I have to be mobile all the time. and moving a mirror around all the time will be problematic.  So when HighPointScientific has in stock the William Optics FLT 132, I hope I have saved enough to purchase..  It will be light enough for my AM5.

NGC7635:

NGC 7635, also known as the Bubble NebulaSharpless 162, or Caldwell 11, is an H II region[1]emission nebula in the constellation Cassiopeia. It lies close to the open clusterMessier 52. The "bubble" is created by the stellar wind from a massive hot, 8.7[1]magnitude young central star, SAO 20575 (BD+60°2522).[7] The nebula is near a giant molecular cloud which contains the expansion of the bubble nebula while itself being excited by the hot central star, causing it to glow.[7] It was discovered in November 1787 by William Herschel.[5] The star BD+60°2522 is thought to have a mass of about 44 M☉. With an 8-or-10-inch (200 or 250 mm) telescope, the nebula is visible as an extremely faint and large shell around the star.[6][1] The nearby 7th magnitude star on the west hinders observation, but one can view the nebula using averted vision.[6] Using a 16-to-18-inch (410 to 460 mm) scope, one can see that the faint nebula is irregular, being elongated in the north south direction.
  1. SIMBAD 2007.
  2. HubbleSite 2000.
  3. Nemiroff & Bonnell 2004.
  4. Nemiroff & Bonnell 2006.
  5. "NGC-IC Project Database". Archived from the original on 2001-09-04. Retrieved 2008-12-15.
  6. Kepple & Sanner 1998.
  7. Nemiroff & Bonnell 2005.

@information from Wikipedia

M52 / NGC7654:Messier 52 (M52) is a bright open cluster located in the northern constellation Cassiopeia. The cluster has an apparent magnitude of 6.9 and lies at an approximate distance of 4,600 light years from Earth. It has the designation NGC 7654 in the New General Catalogue.Messier 52 can easily be seen with binoculars. In 10×50 binoculars, it appears as a hazy, nebulous patch of light. 4-inch telescopes reveal a dense, compressed star cluster populated by many faint stars, with a shape resembling that of the letter V. More stars are visible in 6-inch and larger instruments. The cluster occupies an area just less than half of the size of the full Moon.Messier 52 is very easy to find as it lies near Cassiopeia‘s prominent W asterism, formed by the constellation’s brightest stars.The cluster can be located by extending the line from Schedar, Alpha Cassiopeiae, to Caph, Beta Cassiopeiae to the northwest about the same distance as that between the two stars. The cluster lies only a degree south of the star 4 Cassiopeiae. The best time of year to observe it is during the autumn.The cluster has a Trumpler classification of I,2,r, which means that it is detached from the surrounding star field and has strong central concentration (I), it has a moderate range in brightness (2), and is richly populated (r), with 100 or more confirmed members. The cluster’s density in the central region is about three stars per cubic parsec.The distance to M52 has not been established with any degree of certainty because of a high interstellar absorption of the cluster’s light. Estimates are generally in the range from 3,000 to 7,000 light years.Messier 52 contains 193 probable members within a region 9 arc minutes in radius. These were discovered by the Swedish astronomer Åke Wallenquist.The brightest main sequence star in the cluster is magnitude 11 and belongs to the spectral class B7. The brightest of all stars in M52 has the spectral classification F9 and a visual magnitude of 7.77. The cluster has an estimated age of 35 million years.Messier 52 lies near another prominent deep sky object, the Bubble Nebula (NGC 7635). The emission nebula can be seen about 35 arc minutes southwest of the cluster. It was discovered by William Herschel in 1787. The Bubble Nebula lies at a much greater distance from us than the cluster – 11,000 light years – and the two are not physically related.Object: ClusterType: Open Designations: Messier 52, M52, NGC 7654, Collinder 455, OCl 260, C 2322+613, MWSC 3725 Constellation: CassiopeiaRight ascension: 23h 24.2m Declination: +61°35′ Distance: 4,600 light years (1,400 parsecs) Age: 35 million years Number of stars: >100 Apparent magnitude: +6.9 Apparent dimensions: 13′ Radius: 9.5 light years

@Infiormation from Messier-Objects.com

Comments

Revisions

  • NGC7635 and M52 (NGC7654), Joe Matthews
    Original
  • Final
    NGC7635 and M52 (NGC7654), Joe Matthews
    B

B

Title: Bubble crop

Description: Thought I would crop my intended target.

Uploaded: ...

Sky plot

Sky plot

Histogram

NGC7635 and M52 (NGC7654), Joe Matthews