NGC 6729 and the Corona Australis Dust Complex

Image Title: NGC 6729 HaLrgb

Copyright: Mirko Tondinelli

Date image was taken: July 28, 2025

Location: Itex observatory Texas

Data Acquisition Method: Personal Telescope Setup

Description and Details: NGC 6729 (also known as C 68) is a reflection nebula visible in the constellation Corona Australis. The nebula is located on the line joining the stars γ Coronae Australis and ε Coronae Australis, both of which are fifth magnitude. The region of sky between the two stars appears heavily obscured by interstellar dust, which is home to several bright nebulae, such as NGC 6726 and NGC 6727. NGC 6729 is the smallest of the group, but is recognizable by its distinctly triangular shape, brighter at one vertex, which gives it a comet-like appearance. Its brightness varies, a characteristic that makes it similar, in addition to its shape, to NGC 2261, the Hubble Variable Nebula. The globular cluster NGC 6723 can also be seen in the same field of view.
Second photo from itex_observatory. The main difficulty with this shot was its low altitude, which never exceeded 24° in the Texas sky. The magnificent sky where our equipment is located helped make this photo possible perfectly. This is my personal processing, following my established workflow.

Image data:

Luminance 118 × 300″ = 9 hours 50′
R 47 × 180″ = 2 hours 21′
G 44 × 180″ = 2 hours 12′
B 43 × 180″ = 2 hours 9′
H 56 × 600″ = 9 hours 20′

Total 25 hours 52′

Thanks again to Optolong Filter Images, who used their filters to create this image.

Name: Mirko Tondinelli

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