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  1. Galleries
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  4. » Plato Crater (101 Km)

 
Plato Crater (101 Km)...

Luna 1

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Plato Crater (101 Km) sent on February 16, 2018 (20:18) by Marco Di Francesco. 20 comments, 906 views.

Sotto Platone c'è il mare delle piogge (Imbrium), sopra c'è il mare del freddo (Frigoris). In basso a sx la baia degli arcobaleni (Sinus Iridum) con il cratere Bianchini (38 Km). Sulla destra si vede Vallis Alpes (180 Km) ------ 27/01/2018 - Telescopio Meade ETX-125EC a F/15, camera ASI120MM, filtro infrarosso, somma di 200 frames su 500, elaborazione Avistack2 + Photoshop CS6






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avatarsenior
sent on February 17, 2018 (7:59) | This comment has been automatically translated (show/hide original)

Beautiful your results .. seems to land us to moments on the moon .. congratulations ;-) ;-) see you soon Alberto

avatarjunior
sent on February 17, 2018 (9:52) | This comment has been automatically translated (show/hide original)

Thanks, Alberto. Fruit of a lot of theoretical preparation on books, sacrifice in the field (and you know something about your beautiful and difficult shots ....) and a lot of patience in post-production. Thanks again and very good to you.

avatarjunior
sent on February 17, 2018 (15:08) | This comment has been automatically translated (show/hide original)

Splendid lunar works ... !!!! If you've noticed, you're close to solving the Rima della Valle Alpestris ...! This must be your new bet.
With the diameter of your instrument you are at the limit resolutive but you can make me believe me.
If it should happen a night of excellent seeng, and the right stage try it because you already notice something ..!

avatarjunior
sent on February 17, 2018 (15:38) | This comment has been automatically translated (show/hide original)

Thanks Mariano, you're always too kind ... But as regards the rhyme you're talking about, I remind you that it's only 300 meters wide: it's practically impossible to solve it with my 5 inch ...

avatarsenior
sent on February 17, 2018 (17:45) | This comment has been automatically translated (show/hide original)

Very nice
compliments
hello Mauro.

avatarjunior
sent on February 18, 2018 (8:08) | This comment has been automatically translated (show/hide original)

Compliments! I do not mean astrophotography but I am fascinated. I was impressed by the definition of this your shot, it seems to be able to touch it. The description is very interesting for me!

Marco

avatarjunior
sent on February 18, 2018 (9:45) | This comment has been automatically translated (show/hide original)

Thanks to everyone, I will try to always do better.

avatarjunior
sent on February 18, 2018 (12:46) | This comment has been automatically translated (show/hide original)

The discourse of diameter as you know, is linked to many factors, first of all the seeng, it is not said that your instrument can do it, however, try not to hurt ...
Certainly, from what is known and from the news of many serious amateur astronomers, it is visible (in nights with excellent seeng) with 10 cm refractors. long-fire achromatic (with good optics). And of course with apo. 125 mm mirror are comparable to a 100 mm lens. I would try this.
The two winning cards are: the seeng that would allow you to force a little more the primary magnification and above all the right inclination of solar lighting ... the right phase in a few words that is not always the same even on the same day.
It is easily visible with long-fire acro refractors and 120 mm apo.

avatarjunior
sent on February 18, 2018 (12:55) | This comment has been automatically translated (show/hide original)

I forgot to tell you that the diameter factor / resolving power is strongly influenced by the contrast of the subject to be photographed ... also the Cassini Division on the rings of Saturn could not be seen from diameters less than 180 mm but the strong contrast is visible even with instruments with 70mm lenses or 90 - 100mm mirrors.
What can be seen or photographed with just enough diameters of the Rima Alpestris, is the very dark shadow inside the Rima itself. For the totality it takes more diameters.

avatarjunior
sent on February 18, 2018 (20:49) | This comment has been automatically translated (show/hide original)

Very beautiful. Compliments. Vittorio.

avatarjunior
sent on February 18, 2018 (22:38) | This comment has been automatically translated (show/hide original)

Many thanks, Vittorio.

avatarsenior
sent on February 19, 2018 (9:24) | This comment has been automatically translated (show/hide original)

Congratulations Marco !!! A really beautiful result. A question? Why do you find yourself alone with 500 frames? Are you linked to the pursuit of the frame and you have to make short movies?

avatarjunior
sent on February 19, 2018 (12:11) | This comment has been automatically translated (show/hide original)

Bravo, you've hit the mark. The mount (AZ) of the ETX is little more than a toy and although it has the computerized tracker for tracking, the mechanics is not up to the electronics ... After a few tens of seconds the image moves in a way such that the stacking program would not be able to align the frames. Thanks anyway for the compliments and good for the intuition ....

avatarsenior
sent on February 19, 2018 (12:18) | This comment has been automatically translated (show/hide original)

:-D ;-)

Question, which infrared filter do you use? Links ?? :-D I would also take me for the lunar shooting, combined with a Meade LX200 10 "with Asi120mm and that I hope to bring out something good ... turbulence and seeing permitting :-(

avatarjunior
sent on February 19, 2018 (12:54) | This comment has been automatically translated (show/hide original)

I use this:
www.primalucelab.com/astronomia/astronomik-filtro-proplanet-742-ir-pas
The theory says to use it only at low altitudes (up to 30/40 degrees). With greater heights, blue or green filters would be more effective. I use it anyway, because it seems to me that the images are more stable and more defined ...
I scan with Sharpcap in 12 bit mode, I work with Avistack2 and I finish with Photoshop CS6.
With 10 inches you can do great things ...! Good job....

avatarjunior
sent on February 19, 2018 (13:58) | This comment has been automatically translated (show/hide original)

I forgot, Slashleo (but probably you already know): our camera ASI120 (pixel from 3.75) gives the best of itself with ratios around F20 (5 meters for your telescope), so you will agree to use a 2x barlow .... ..

avatarsenior
sent on February 19, 2018 (16:51) | This comment has been automatically translated (show/hide original)

I should have one of Meade's own. I wait for better times. Thanks for the info :-D

A question: in the link you posted, in the description it shows "with 150mm diameter telescopes" ... what does it refer to? Which below that diameter can not be used?

avatarjunior
sent on February 19, 2018 (19:37) | This comment has been automatically translated (show/hide original)

Well, the fact that I use it successfully proves the opposite. However for diameters starting from 25 cm (that would be yours) the site considers the 807 model, the same price, more suitable. Probably the latter, as it cuts up to 800 nanometers (instead of 700 like mine), needs a larger diameter to provide more light. If I were you I would buy the latter ...

avatarjunior
sent on March 19, 2018 (13:33)

Great sht and so very sharp !

avatarjunior
sent on March 19, 2018 (13:47) | This comment has been automatically translated (show/hide original)

Thanks a lot Peter .....


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