martinsastro

Astronomy for all.
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133 files in 12 albums and 1 categories with 0 comments viewed 38,899 times

misc


Lester.jpg

1 files, last one added on Dec 26, 2011
Album viewed 212 times

Dargo to Licola


IMG_0518.jpg

18 files, last one added on May 21, 2016
Album viewed 42 times

Camper trailer files.



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Random files
Lagoon_done2G.jpg
Lagoon_done2G.jpgLagoon nebula.206 views16X10Minutes Luminance
10X100Seconds RGB
ED80 and QHY9 on a losmandy G11 with Gemini 2
This was just a guiding test after many problems.
Still not perfect but it is getting there.
Martin
Dave_and_scope.jpg
Dave_and_scope.jpg287 viewsMartin
etaha-2.jpg
etaha-2.jpgEta Carinae in HA.263 viewsThis stellar system is currently one of the most massive that can be studied in great detail. Until recently, Eta Carinae was thought to be the most massive single star, but it was recently demoted to a binary system.[7] The most massive star in the Eta Carinae multiple star system has more than 100 times the mass of the Sun. Other known massive stars are more luminous and more massive.

Stars in the mass class of Eta Carinae, with more than 100 times the mass of the Sun, produce more than a million times as much light as the Sun. They are quite rare — only a few dozen in a galaxy as big as the Milky Way. They are assumed to approach (or potentially exceed) the Eddington limit, i.e., the outward pressure of their radiation is almost strong enough to counteract gravity. Stars that are more than 120 solar masses exceed the theoretical Eddington limit, and their gravity is barely strong enough to hold in their radiation and gas.

Eta Carinae's chief significance for astrophysics is based on its giant eruption or supernova impostor event, which was observed around 1843. In a few years, Eta Carinae produced almost as much visible light as a supernova explosion, but it survived. Other supernova impostors have been seen in other galaxies, for example the false supernovae SN 1961v in NGC 1058[8] and SN 2006jc in UGC 4904,[9] which produced a false supernova, noted in October 2004. Significantly, SN 2006jc was destroyed in a supernova explosion two years later, observed on October 9, 2006.[10] The supernova impostor phenomenon may represent a surface instability[11] or a failed supernova. Eta Carinae's giant eruption was the prototype for this phenomenon, and after nearly 170 years the star's internal structure has not fully recovered.
Martin
IMG_0515.jpg
IMG_0515.jpg66 viewsJacki and carMartin
Guess_who.jpg
Guess_who.jpg198 viewsGuess who?Martin
IMG_0506.jpg
IMG_0506.jpg52 viewsCamp fire at WonangattaMartin
M48-done2M.jpg
M48-done2M.jpgM48.316 viewsMessier 48 (also known as M 48 or NGC 2548) is an open cluster in the Hydra constellation. It was discovered by Charles Messier in 1771.

There is actually no cluster in the position indicated by Messier. The value that he gave for the right ascension matches that of NGC 2548, however, his declination is off by five degrees.Credit for discovery is sometimes given instead to Caroline Herschel in 1783.
Martin
Lagoon-L.jpg
Lagoon-L.jpgNo flattener661 viewsMartin

Last additions
IMG_0518.jpg
IMG_0518.jpgnice view68 viewsnice viewMartinMay 21, 2016
IMG_0517.jpg
IMG_0517.jpgARB Kev85 viewsARB Kev.MartinMay 21, 2016
IMG_0516.jpg
IMG_0516.jpg66 viewsKev's CarMartinMay 21, 2016
IMG_0515.jpg
IMG_0515.jpg66 viewsJacki and carMartinMay 21, 2016
IMG_0514.jpg
IMG_0514.jpg72 viewsAlex's carMartinMay 21, 2016
IMG_0513.jpg
IMG_0513.jpg69 viewsScotty's carMartinMay 21, 2016
IMG_0512.jpg
IMG_0512.jpg70 viewsMark beside his carMartinMay 21, 2016
IMG_0511.jpg
IMG_0511.jpg68 viewsHang this in the ceiling and Mark will be out of business :PMartinMay 21, 2016