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Messier 39 or M39, also known as NGC 7092, is an open cluster of stars in the constellation of Cygnus, sometimes referred to as the Pyramid Cluster. It is positioned two degrees south of the star Pi Cygni [ 7 ] and around 9° east-northeast of Deneb . [ 8 ]
The M39 lens mount is a screw thread mounting system for attaching lenses to 35 mm cameras, primarily rangefinder (RF) Leicas. It is also the most common mount for Photographic enlarger lenses. True Leica Thread-Mount (LTM) is 39 mm in diameter and has a thread of 26 turns-per-inch or threads-per-inch (tpi) (approximately 0.977 mm pitch) of ...
For example, Messier 1 is a supernova remnant, known as the Crab Nebula, and the great spiral Andromeda Galaxy is M31. Further inclusions followed; the first addition came from Nicolas Camille Flammarion in 1921, who added Messier 104 after finding Messier's side note in his 1781 edition exemplar of the catalogue.
Variants include the Tair 11A for the M42 lens mount and the original Tair 11 for the M39 lens mount. The Tair 11-T is a "Technical" or "Television" for cinecamera or surveillance. The Tair 11-2 is an M42 lens with a focal length of 133mm. [2] A unique feature of the Tair 11 series is the twenty aperture blades, [3] far more than many modern ...
Messier 38 or M38, also known as NGC 1912 or Starfish Cluster, [4] is an open cluster of stars in the constellation of Auriga.It was discovered by Giovanni Batista Hodierna before 1654 and independently found by Le Gentil in 1749.
IC 5146 (also Caldwell 19, Sh 2-125, Barnard 168, and the Cocoon Nebula) is a reflection [2] /emission [3] nebula and Caldwell object in the constellation Cygnus. The NGC description refers to IC 5146 as a cluster of 9.5 mag stars involved in a bright and dark nebula.
Messier 34 (also known as M34, NGC 1039, or the Spiral Cluster) is a large and relatively near open cluster in Perseus.It was probably discovered by Giovanni Batista Hodierna before 1654 [4] and included by Charles Messier in his catalog of comet-like objects in 1764.
RCW 49, also known as NGC 3247, is a H II region [1] nebula located 13,700 light years away. [2] Other designations for the RCW 49 region include NGC 3247 and G29 [3] and it is commonly known as the Whirling Dervish Nebula. [4] It is a dusty stellar nursery that contains more than 2,200 stars [2] and is about 300-400 light years across. [5]