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Montes Apenninus sent on March 18, 2018 (19:56) by Marco Di Francesco. 6 comments, 684 views. Al bordo sud-est del Mare Imbrium si estendono gli Appennini lunari, una catena montuosa lunga 600 km con picchi che oltrepassano i 5000 metri di altezza -------- 09/03/2018 - Telescopio Meade ETX-125EC a F/15, camera ASI120MM, filtro infrarosso, somma di 200 frames acquisiti con SharpCap3, elaborazione Avistack2 + Photoshop CS6
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sent on March 19, 2018 (10:12) | This comment has been automatically translated (show/hide original)
Beautiful picture, I also have the same portable equipment ... I can not wait for there to be a crack in the clouds to pull the equipment out ... :-( Bella immagine, anche io ho la stessa attrezzatura portatile...non vedo l'ora che ci sia uno spiraglio fra le nuvole per poter tirare l'attrezzatura fuori...
sent on March 19, 2018 (12:53) | This comment has been automatically translated (show/hide original)
Thank you as always dear, even if this image reviewing it seems to me have problems with alignment of the frames, it seems to move. Before posting it seemed decent: tonight I know that I take it off and try to rework it. I do not like. Grazie come sempre caro, anche se questa immagine rivedendola mi sembra abbia problemi di allineamento dei frames, sembra mossa. Prima di postarla mi sembrava decente: stasera mi sa che la tolgo e provo a rielaborarla. Non mi piace.
sent on March 19, 2018 (15:46) | This comment has been automatically translated (show/hide original)
I attributed the problem to seeing not exactly perfect ... we are going to see what happens! ;-) Io ho attribuito il problema al seeing non proprio perfetto...stiamo a vedere che succede!
sent on March 20, 2018 (14:15) | This comment has been automatically translated (show/hide original)
Marco these photos are fantastic !! Can I ask you from a layman, why do you have to take 200 photos to get this result? A greeting Andrew Marco queste foto sono fantastiche!! Posso chiederti da profano perché devi fare 200 foto per avere questo risultato?? Un saluto Andrea
sent on March 20, 2018 (15:18) | This comment has been automatically translated (show/hide original)
Actually, no photos are taken but a short video is captured via a CCD camera or camera. Then you give the movie to specific programs that analyze the hundreds of frames (frames), select the best ones (not damaged by moments of excessive atmospheric turbulence) and add them together (stacking). This causes the details (adding them) to be highlighted, while the spurious pixels that form the "noise" cancel each other out. It's a very brief explanation: in reality there are dozens of parameters that interfere with the result and that must be selected manually according to the subject taken and their own experience ... ;-) Thank you for your compliments. In realtà non si eseguono foto ma si acquisisce un breve filmato tramite una camera CCD o una fotocamera. Poi si da il filmato in pasto a programmi specifici che analizzano le centinaia di frames (fotogrammi), selezionano quelli migliori (non rovinati da momenti di eccessiva turbolenza atmosferica) e li sommano tra loro (stacking). Questo fa si che i dettagli (sommandoli) vengano messi in risalto, mentre i pixel spuri che formano il "rumore" si annullino a vicenda. E' una spiegazione molto sommaria: in realtà ci sono decine di parametri che interferiscono sul risultato e che vanno selezionati manualmente secondo il soggetto ripreso e la propria esperienza... Grazie per i complimenti.
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