Astral Imaging at Dogwood Ridge Observatory

Latitude: 37°48'51.0" N"
Longitude:78°23'41.0"W
Scottsville, Virginia 24590

(click on thumbnails to go to that image's page)

Quoted from SEDS:

Discovered 1779 by Charles Messier.

Messier 58 (M58, NGC 4579) is one of the four barred spiral galaxies in Messier's catalog (the others are M91, M95,and M109), although it is sometimes classified as intermediate between normal and barred spirals (e.g., in R. Brent Tully's Nearby Galaxies Catalog). It is one of the brightest galaxies in the Virgo cluster.

Charles Messier discovered M58, together with the apparently nearby elliptical galaxies M59 and M60, on the occasion of following the comet of 1779, and cataloged it on April 15, 1779. M58 is one of the earliest recognized spiral galaxies, and listed by Lord Rosse as one of 14 "spiral nebulae" discovered to 1850.

Smaller telescopes let it look similar to the Virgo ellipticals, showing only its bright nucleus. Under good conditions, 4-inch or larger scopes show a halo of uneven brightness with condensations which seem to coincide with brighter areas of the spiral arms. A suggestion of M58's bar may be noticed with telescopes starting from 8-inch, as an "extension of the central nucleus in an EW direction" (Kenneth Glyn Jones).

Two supernovae have been observed in M58: the type II supernova 1988A, found by Ikeya on January 18, 1988, 40" south of the nucleus at mag 13.5, and the type I supernova 1989M, discovered by Kimeridze on June 28, 1989 at mag 12.2 and 33"N, 44"W of M58's center.

• Historical Observations and Descriptions of M58
• More images of M58
• Amateur images of M58
• SIMBAD Data of M58
• NED Data of M58
• Publications on M58 (NASA ADS)
• Observing Reports for M58 (IAAC Netastrocatalog)
• NGC Online data for M58 

This LRGB image consists of 8 Red, 8 Green, and 7 Blue images all taken at -30°C at bin 2x2 for 10 minutes each. Twenty five 15 minute images were used for the luminance image at -30 binned 1x1. All data used totals 10 hours. All data was acquired using MaxImDl/CCD version 5.24 using ACP7.1.  Pix Insight version 1.8 was used for processing. Dithered guiding was on.

This is a LRGB image and all used were measured at 2.5" arc seconds or better. I used HDR Wavelets on the luminance data only before combining the RGB image with the luminance.