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  1. Galleries
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  3. Astrophotography
  4. » orion nebula

 
orion nebula...

astronomia

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orion nebula sent on December 28, 2013 (14:31) by Massimo Busato. 7 comments, 699 views.

3.2 sec f/11.0, ISO 8000, tripod.

prima foto che scatto con un telescopio, scattata da Urano (VE) una zona di alta densità luminosa, attrezzatura usata cavalleto con testa equatoriale celestron serie gt motorizzata in entrambi gli assi, rifrattore skywacter diametro 90 x 900 f11 d800E co scatto remoto , fotografia composta di scatto unico elaborata con photoshop cs6





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avatarjunior
sent on December 28, 2013 (16:11) | This comment has been automatically translated (show/hide original)

sorry but why is all green? And the blue halos around the stars what are they?

user28347
avatar
sent on December 28, 2013 (18:11) | This comment has been automatically translated (show/hide original)

the focus is not very accurate, try again with different shots just by changing the focuser, shame because the nebula is as beautiful as a flower, hello

avatarjunior
sent on December 28, 2013 (18:53) | This comment has been automatically translated (show/hide original)

thanks for the advice, unfortunately on this field of photography are scarce
this is the first photograph ever do that with a telescope,
the telescope that I have since I brought home for one reason or another I never interested in pusarlo,
alt day I pulled it out from the case and I forced myself to use it in order to use it to do astrophotography


thanks again Massimo Busato

user28347
avatar
sent on December 28, 2013 (18:58) | This comment has been automatically translated (show/hide original)

anything, check if it is collimated, a point light blurs away and see if it makes a circle round as much as possible, if it is oval then you have to fix it. looking on the internet for any collimation

avatarsenior
sent on January 02, 2014 (10:49) | This comment has been automatically translated (show/hide original)

also checks whether it is collimated

I do not think you can collimate a refractor SkyWatcher ... However, the problem of the recovery is not the collimation of the telescope and even the focus (which is not so disastrous, although improved) but the fact that it is completely green! The blue halos around stars are due to chromatic aberration of the refractor, but for how much chromatic aberration there could be so green should not come! Now it is to understand if it is a processing error or an artistic effect of the author. If it is a desired effect ... everyone has their own tastes! ;-)

hello

Clare

user28347
avatar
sent on January 02, 2014 (12:17) | This comment has been automatically translated (show/hide original)

already clear you're right, I made me blue borders to the stars with the 77 f1.8 which costs 1100 Euros, they told me that it is a chromatic lens aberration, hello

avatarjunior
sent on January 02, 2014 (21:47) | This comment has been automatically translated (show/hide original)

thanks for comments and Sergio Ciara and this the first photo shooting with a telescope,
the refractor cmd said you can not coincide,
I tried with others but has a lot of aberration, is low cost,
I must have been wrong for the green myself.
are not more shots put together but only one
I hope to improve with the next shots.

Happy New Year to all the forum

Maximum Busato




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