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  1. Galleries
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  4. » AR3007 Comparisons

 
AR3007 Comparisons...

Astronomia

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AR3007 Comparisons sent on May 12, 2022 (16:05) by Serafix. 5 comments, 451 views. [retina]

ciao a tutti, se può interessare, volevo postare queste riprese fatte stamani. ho ripreso AR3007 che sta transitando sul sole in questi giorni, utilizzando tutti i filtri colorati visuali che avevo a disposizione. ne ho uniti qualcuno in sandwich per vedere il risultato e ne ho fatta anche una con l'IR Pass come riferimento. dal raffronto fra tutte quante ho notato che due, a mio avviso, evidenziano meglio certi dettagli rispetto all'IR Pass. non vi dico qual'è stata la mia impressione per non influenzarvi, ma se voleste darmi un vs. parere sarei contento. mi auguro che la compressione di questo marcissimo jpg non penalizzi troppo la valutazione. i dati di ripresa sono: C8 + tubi prolunga + ASI385mc (monocromatico) allineamento e somma in Autostakkert! le immagini sono il frutto di uno stack da 500 frame/cad. non ci sono elaborazioni (non ho neanche tolto i fastidiosi grani di polvere). ho ripreso dalle prealpi venete con un seeing discreto, a tratti buono.


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avatarjunior
sent on May 18, 2022 (16:48) | This comment has been automatically translated (show/hide original)

Hello Serafino, thanks for this interesting test.
I tried to carefully compare the result of the various filters. It seems to me that in addition to the one with IR pass filter, the two with similar details and perhaps as you say a hair better, are the orange filter and the violet + red sandwich. But they seem to me minimal differences and I wonder if any temporary variations of the seeing can never have played a role ... Can you tell us your impression? ;-)
By the way, it happens that just that same day I managed after more than a month of forced rest to pull out the H-alpha telescope! So if you want I could send you my fans and you could try to make a comparison of that same region active in white light (photosphere) and H-alpha (chromosphere)... it would be interesting what do you say? 8-)
Hello, Daniele

avatarjunior
sent on May 19, 2022 (13:10)


This comment is too long to be automatically translated, so it will be shown in its original language (Italian)  

Click here to translate the comment in English [en]


Ciao Daniele, lieto di sentirti :)
ti ringrazio per il riscontro, mi fa molto piacere leggere la tua opinione.
Le impressioni che ho avuto io sono queste: SW violetto+rosso risaltano molto bene le sfumature delle macchie (sia zone d'ombra che penombra) al pari dell'IR Pass (forse qualcosina in più, ma inezie).
SW giallo+verde risalta in modo netto la granulazione (sulle macchie non ha grandi effetti, anzi....).
per quanto riguarda il seeing posso dirti questo: durante quella sessione astrofotografica è rimasto abbastanza stabile per cui sono portato a dire che i risultati sono tutto sommato veritieri.
al contrario, stamani ho ripreso il notevole gruppo AR3014, il seeing era abbastanza ballerino e l'acquisizione con IR pass è stata la migliore di tutte (eventualmente posterò il risultato). Il seeing quindi risulta essere sempre la solita incognita contro la quale combattere.
Ho inoltre provato a fare altri abbinamenti fra i vari filtri colorati e presto li metterò a confronto.
Se mi mandi i tif delle tue acquisizioni ne sarei veramente felice. Un raffronto della stessa regione sarebbe indubbiamente interessante.
Ho, inoltre, delle elaborazione fatte su delle acquisizioni di un amico; magari poi ti chiedo qualche consiglio ;)
a presto, ciao

Serafino


avatarjunior
sent on May 21, 2022 (15:58) | This comment has been automatically translated (show/hide original)

Hello Serafino,
in fact I had focused on looking at the effect on the radial structures in the penumbra areas of the spots. But in fact on the granulation even the filter you indicated has given excellent results!
Last Thursday I also caught the sun, the mega structure of spots was really impressive! I looked at the sun even with eclipse goggles and the mega spot was clearly visible even to the naked eye!
I still have to process the photos on Thursday, but at this point we have two days for which to compare between white light and alpha h!
From Monday I send you by email my fans! (Not the individual frames that would be too much data but the result of the stacks!)
Hello and have a good weekend!
Daniel

avatarjunior
sent on May 22, 2022 (14:47) | This comment has been automatically translated (show/hide original)

certainly, thanks :-)
can't wait to make comparisons 8-) ;-)

avatarjunior
sent on May 22, 2022 (15:02) | This comment has been automatically translated (show/hide original)

in the meantime I link you a video related to my acquisition in white light made yesterday morning.
I just knew what object it is, but I would like to go to the bottom of the mystery ;)
https://youtu.be/HvpGRCvIxw4


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