RCE Foto

(i) On JuzaPhoto, please disable adblockers (let's see why!)






Login LogoutJoin JuzaPhoto!
JuzaPhoto uses technical cookies and third-part cookies to provide the service and to make possible login, choice of background color and other settings (click here for more info).

By continuing to browse the site you confirm that you have read your options regarding cookies and that you have read and accepted the Terms of service and Privacy.


OK, I confirm


You can change in every moment your cookies preferences from the page Cookie Preferences, that can be reached from every page of the website with the link that you find at the bottom of the page; you can also set your preferences directly here

Accept CookiesCustomizeRefuse Cookies


  1. Galleries
  2. »
  3. Astrophotography
  4. » Pleiades (with Pentax and his astrotracer)

 
Pleiades (with Pentax and his astrotracer)...

Norvegia 2023

View gallery (32 photos)

Pleiades (with Pentax and his astrotracer) sent on January 10, 2023 (18:43) by Juza. 33 comments, 5751 views. [retina]

at 140mm, Posa B f/4.0, ISO 800, tripod.

Anche se questa foto non è neppure lontanamente vicina alla qualità delle astrofoto "professionali", penso sia un'interessante dimostrazione dell'astrotracer di Pentax - questa funzionalità replica (entro un certo limite) il lavoro di una montatura equatoriale, andando a muovere il sensore durante lo scatto per controbilanciare la rotazione terrestre e permettere di scattare astrofoto con tempi estremamente lunghi (fino a 10 minuti, anche se dipende da focale e inquadratura). Nel caso di questo scatto, si tratta di un'esposizione di 150", con focale 210mm equivalenti, e le stelle sono puntiformi - normalmente con una focale del genere e un tempo così lungo le stelle apparirebbero come striscie. Per chi vuole sperimentare qualche foto astronomica senza attrezzatura dedicata, l'astrotracer è un'affascinante funzionalità :-)



View High Resolution 6.8 MP   Buy Usage License  

127 persons like it: 1niko, Af61, Alan Ford, Albertopantellini, Albi, Albieri Sergio, Alcenero, Aldo Costa, Allmau, Andrea Biagiolini, Angelo68, Aringhe Blu, Aron76, AstroC, Augusto Cherchi, Beppe.castino, Buenavida, Calsifer, Cirillo Donelli, Cristiano34, Crowfast_ph, Dantes, Danysky, DiIulio75, Edecapitani, Eemac73, Elia De Feudis, Elisabeth Ardouin, Emilio Paolo, Enrico Maggi, Erravolo, Fabio F77, Fabio M, Fabio789, Fede79, Fescar, Flavio Bucciarelli, Franco B, Fucio7, Fulvio Gioria, Gabriele Netti, Gabriele Scetti, Gaetano Perego, Gaia Alessandro , Gift Of Faith, Giion, Giovanni e Davide, Giovanni Soligo, Giovaz, Giulio Orlando, Giuseppe Maiorana, Gundamrx91, H.Thom, Jack1984, Jack_98, Jacopo Maffei, Latino Rosario, Lauc, Leopoldo Lusa, Lince, Lorenzo902018, Luca Alessi, Luca Questa, Luca1, LucianoSerra.d, MacPorter, Marant, Marco Rebesco, Marcop, Mario2006, Maryas, Marzio Bambini, Matteo Venturelli, Matteobelletti, Matteo_86, Mauri67, Maxmontella, Mikael, Miloga, Mimmo Aquino, Mirko73, Mmc12, Mnardell, Momiziano, Motofoto, Naturman, Nino Rubino, Nordend4612, Odysseus, Oldclub, P.a.t 62, Panleo1, Paolo Lorenzon Bariviera, PBrugne, Photorick66, PietroCv, Pinitti, Planet Eric, Quota2000images, Realvit, Renni, Ric96, RiccardoGandi95, Rivilli Antonio, Roberto Degli Uomini, Robertopitt, S5pro, Salass67, Salvatopo, Sandro Zambon, Saverio Perrotta, Sergik, Sloweyes, Soriana, Stampedli, Star Trek, Stefania Saffioti, Stefano Marangoni, StefanoConti, Taglia67, TheBlackbird, Thom, Tortax, Valerio Rossato, Valpil58, Zanardo, Zinder


PAGE: « PREVIOUS PAGE | ALL PAGES |


What do you think about this photo?


Do you have questions or curiosities about this image? Do you want to ask something to the author, give him suggestions for improvement, or congratulate for a photo that you really like?


You can do it by joining JuzaPhoto, it is easy and free!

There is more: by registering you can create your personal page, publish photos, receive comments and you can use all the features of JuzaPhoto. With more than 242000 members, there is space for everyone, from the beginner to the professional.




avatarjunior
sent on January 12, 2023 (7:21) | This comment has been automatically translated (show/hide original)

The sensor moves, first hooks the satellites and gauges with the GPS that can be either integrated into the machine or added by device taken separately called astrotracer, so then the sensor moves following the movement of the stars. It does not work beyond a certain number of minutes due to the limits of movement, the shorter the focal length, the more minutes there are. The k3 in addition has, as they wrote in these forums, a system that works without GPS but comparing two photos in sucession, system that I do not know because not present in other pentax and is completely new.

avatarjunior
sent on January 12, 2023 (8:40) | This comment has been automatically translated (show/hide original)

I did not think you get this result with 140mm, I, on K3 II that has the same function, I used it with 28mm and that's it. Nice photo, looks like the Subaru logo

avatarsenior
sent on January 12, 2023 (14:59) | This comment has been automatically translated (show/hide original)

Well, I'd say it works.
;-)

avatarsenior
sent on January 12, 2023 (15:47) | This comment has been automatically translated (show/hide original)

looks like the Subaru logo
Subaru=Pleiades in Japanese :-)

avatarjunior
sent on January 15, 2023 (11:37) | This comment has been automatically translated (show/hide original)

@ Juza
mah , then depends on what one expects to get
I doubt that an amateur astronomer is satisfied with this result , knowing what could be a minimum union .
At 150mm focal length I expect round stars obtainable with a small and light astro_inseguitore, here instead the stars are not round.
We must also talk about the signal/noise ratio that in this case is all in favor of noise or lack of signal, not surprisingly we always talk about hours of integration.
In a nutshell, it is the classic result to be discouraged if you want to be intellectually honest.
Anonymous

avatarsenior
sent on January 15, 2023 (12:44) | This comment has been automatically translated (show/hide original)

The typical user of this feature is not who does astrophotography in a dedicated way, but the generalist or landscape photographer who can greatly lengthen the times, and maybe lower the ISO, in scenes set with starry sky, even with not very bright optics, perhaps not optimal or dedicated to astro. Clearly one must then make a fusion of several exposures to have the foreground stopped. But this, as far as I know, is often done anyway.
I do not know if in this case it worked optimally, in theory (textbook) except for some lenses, it should only work at the zoom ends. I do not exclude that if in this case he worked at an intermediate focal length, the result is not the maximum possible.

avatarjunior
sent on January 15, 2023 (13:01) | This comment has been automatically translated (show/hide original)


avatarsenior
sent on January 15, 2023 (13:08) | This comment has been automatically translated (show/hide original)


avatarjunior
sent on January 15, 2023 (13:13) | This comment has been automatically translated (show/hide original)

The k3 has both the gps system and the new one you mentioned, I seemed to understand and the photo taken I always seem to understand, quoting the astrotracer in the disascalia, is made with the gps that I do not exclude works better. For the rest, what you write I agree.

avatarsenior
sent on January 15, 2023 (13:16) | This comment has been automatically translated (show/hide original)

It is not made with external GPS, but with the new mode. The GPS in the room was integrated into the K-3ii, on the new model it was removed, compatibility with the OGPS external unit remains, but Juza did not use.

avatarjunior
sent on January 15, 2023 (13:38) | This comment has been automatically translated (show/hide original)

Ah, you're right I went to see the technical features, I did not know and I had misunderstood what was written in another discussion, thanks.

avatarsenior
sent on January 15, 2023 (14:21) | This comment has been automatically translated (show/hide original)

Bravo Juza
certainly demonstrates the capabilities of this convenient feature that in my opinion becomes very interesting for wide-field photos with low focal length lenses, see the typical photos of the Milky Way taken from the most particular places of our travels
Greetings ;-)

avatarsupporter
sent on January 21, 2023 (7:32) | This comment has been automatically translated (show/hide original)

I really like it: I consider Pentax one of the best brands for innovative features, unfortunately too underestimated compared to the merits.


RCE Foto

Publish your advertisement on JuzaPhoto (info)
PAGE: « PREVIOUS PAGE | ALL PAGES |



Some comments may have been automatically translated with Microsoft Translator.  Microsoft Translator



 ^

JuzaPhoto contains affiliate links from Amazon and Ebay and JuzaPhoto earn a commission in case of purchase through affiliate links.

Mobile Version - juza.ea@gmail.com - Terms of use and Privacy - Cookie Preferences - P. IVA 01501900334 - REA 167997- PEC juzaphoto@pec.it

May Beauty Be Everywhere Around Me