You are not logged in. [Login] Entrance · Main Index · Search · New user · Who's Online FAQ · Calendar Astrophotography and Sketching >> Film Astrophotography Previous   Index   Next   Threaded   Pages: 1 jrw11 professor emeritus Reged: 06/09/07 Posts: 501 Loc: U.S.A. First shot at Pleaides       #2041854 - 12/10/07 04:51 PM Attachment (108 downloads) Edit   Reply   Quote Quick Reply   Here's my first shot at the Pleaides. Canon Rebel Ti prime focused to a Celestron C6n reflector on a CG5 mount. Fujia 400 Sensia film for several minutes. -------------------- Celestron C6n -HD Reflector dual axis drive motors added Orion 80mm Short tube refractor Skyscout Early 70's Pentax 7x50 Garrett Optical 12x60 Garrett Optical 15x70 Oberwerk 20x80 Standards Canon Rebel Ti (film) 4 Minolta Srt cameras Mamiya RB67 Pro-s with 180 lens 127mm KL lens for RB, Bellows hood for RB67 120 and 220 film backs Cambo SCII 4x5 view camera over 50 other film cameras several eyepieces Post Extras:       Nebhunter Pooh-Bah Reged: 10/04/03 Posts: 1010 Loc: Frostbite Falls Re: First shot at Pleaides [Re: jrw11]       #2042423 - 12/10/07 08:20 PM Edit   Reply   Quote Quick Reply   Well done for your first attempt. M45 is always a great target. Did you focus thru the view finder? Keep it up and post those images. The Sensia appears to be a good film at reasonable cost. -------------------- Handle me with Care - The Traveling Wilburys. TEC 140 "Katyusha" - Tec field flattener. Equinox 80 - Atlas EQ6 SynScan GPS ADM conversion. ST-4 guider. PENTAX 67 - 400 EDif - 300 - 200 - 135 - 90 lenses. OM-1 300 Tamron - Konica 35-100 Varifocal STI Pro Stiletto. http://nightfly.zoomshare.com/ Post Extras:       jrw11 professor emeritus Reged: 06/09/07 Posts: 501 Loc: U.S.A. Re: First shot at Pleaides [Re: Nebhunter]       #2042611 - 12/10/07 09:35 PM Edit   Reply   Quote Quick Reply   Thanks! I have dual axis guiding motors attached. I have a Orion ST80 for a guide scope. I focused through the viewfinder. I will buy a Meade 12mm reticle eyepiece. It's because the eye relief is longer. I do know that I will probably have to use a barlow with it. I wonder how long would I have to expose to show the blue clouds. -------------------- Celestron C6n -HD Reflector dual axis drive motors added Orion 80mm Short tube refractor Skyscout Early 70's Pentax 7x50 Garrett Optical 12x60 Garrett Optical 15x70 Oberwerk 20x80 Standards Canon Rebel Ti (film) 4 Minolta Srt cameras Mamiya RB67 Pro-s with 180 lens 127mm KL lens for RB, Bellows hood for RB67 120 and 220 film backs Cambo SCII 4x5 view camera over 50 other film cameras several eyepieces Post Extras:       novbabies Postmaster Reged: 06/05/05 Posts: 15678 Loc: Northern Georgia! Re: First shot at Pleaides [Re: jrw11]       #2042628 - 12/10/07 09:39 PM Edit   Reply   Quote Quick Reply   Nice shot! -------------------- Good Seeing! Mark Orion 12" XTi f/4.9 VERY old Edmund 6" f/8 reflector Assorted binoculars Post Extras:       jrw11 professor emeritus Reged: 06/09/07 Posts: 501 Loc: U.S.A. Re: First shot at Pleaides [Re: novbabies]       #2042658 - 12/10/07 09:52 PM Edit   Reply   Quote Quick Reply   Mark, about your old Edmund reflector. I remember building a 6" f/10 back in the late 60's. I bought the mirrors finished, but, had to drill the holes in the tube, etc. I think it had a grey pedestal mount. And, thanks! My shot of the double clusters came out lousy.That's why I'm getting the reticle eyepiece. -------------------- Celestron C6n -HD Reflector dual axis drive motors added Orion 80mm Short tube refractor Skyscout Early 70's Pentax 7x50 Garrett Optical 12x60 Garrett Optical 15x70 Oberwerk 20x80 Standards Canon Rebel Ti (film) 4 Minolta Srt cameras Mamiya RB67 Pro-s with 180 lens 127mm KL lens for RB, Bellows hood for RB67 120 and 220 film backs Cambo SCII 4x5 view camera over 50 other film cameras several eyepieces Post Extras:       s58y Post Laureate Reged: 12/12/04 Posts: 4850 Loc: Eastern NY Re: First shot at Pleaides [Re: jrw11]       #2042773 - 12/10/07 10:31 PM Edit   Reply   Quote Quick Reply   Nice -- your shot is a whole lot better than my first shot of M45. Capturing the blue nebulosity in M45 is surprisingly difficult. With a DSLR it usually takes hours of exposure to get a good result, but I have no idea how long it takes with film. -------------------- Hutech 30D, SBIG ST-402 autoguider SV80S, SV66 guidescope AP900, G-11, Barndoor tracker http://www.pbase.com/s58y Post Extras:       jrw11 professor emeritus Reged: 06/09/07 Posts: 501 Loc: U.S.A. Re: First shot at Pleaides [Re: s58y]       #2042911 - 12/10/07 11:40 PM Attachment (37 downloads) Edit   Reply   Quote Quick Reply   s58y. Graet photos! Here's my attempt at the double cluster. And, why I'm getting the reticle eyepiece for guiding. In the eyepiece of my guidescope, the image didn't look like it was moving. But, when the slide was enlarged, it showed up clearly.To comment about my attempt: -------------------- Celestron C6n -HD Reflector dual axis drive motors added Orion 80mm Short tube refractor Skyscout Early 70's Pentax 7x50 Garrett Optical 12x60 Garrett Optical 15x70 Oberwerk 20x80 Standards Canon Rebel Ti (film) 4 Minolta Srt cameras Mamiya RB67 Pro-s with 180 lens 127mm KL lens for RB, Bellows hood for RB67 120 and 220 film backs Cambo SCII 4x5 view camera over 50 other film cameras several eyepieces Post Extras:       ClownFish Post Laureate Reged: 04/26/05 Posts: 5600 Loc: Islamabad, Pakistan Re: First shot at Pleaides [Re: jrw11]       #2043002 - 12/11/07 01:09 AM Edit   Reply   Quote Quick Reply   Good start! The blue nebulosity in m45 takes a long time to capture. I find about 30 minutes at f4 about minimum for a decent capture. That's a long exposure, and highly accurate tracking is required. Now my critical review: Your shots will benefit by post-processing. If you have access to Photoshop, we can give you some tips. First, there's too much blue. That's a fault of the film, and can be corrected easily. Both of your shots are out of focus, which is normal when you try and focus with the viewfinder. Your eyes have the ability to focus too, and they re-focus an out-of focus star easily. This means you can never just use your eyes to focus in astrophotography. You will have blurred images 90% of the time. make a simple Hartman Mask, and then later on consider an STI Stelleto focus aid. The second shot shows clear evidence of Polar Mis-alignment causing Field Rotation. No amount of guiding or accurate tracking will help. You can not "guide-out" Polar mis-alignment. It also shows some tracking error, caused by the mis-alignment as well. Polar Alignment and focus are the two most frequent causes of astrophoto errors. Once you remove those two sources, your images will improve dramaticaly! Keep working on it! CF -------------------- Learn all about POLAR ALIGNMENT with my Drift Method Tutorial and simulator!! Or visit my Foreign Service Blog! Post Extras:       jrw11 professor emeritus Reged: 06/09/07 Posts: 501 Loc: U.S.A. Re: First shot at Pleaides [Re: ClownFish]       #2043033 - 12/11/07 01:48 AM Edit   Reply   Quote Quick Reply   Thanks Clownfish. I don't have photoshop. I let the camera store that developes the film, put the images on CD.So, a Hartman mask would be easy to make?I will get a STI stelleto when I can. I am in the process, as I mentioned earlier in getting a reticle eyepiece. Also, today I ordered a Oberwerk 20x80 standard binos.From what I've seen the sti stelleto needs to be bought for one specific camera make?. I use a Canon Rebel ti and the Mamiya SRT's. -------------------- Celestron C6n -HD Reflector dual axis drive motors added Orion 80mm Short tube refractor Skyscout Early 70's Pentax 7x50 Garrett Optical 12x60 Garrett Optical 15x70 Oberwerk 20x80 Standards Canon Rebel Ti (film) 4 Minolta Srt cameras Mamiya RB67 Pro-s with 180 lens 127mm KL lens for RB, Bellows hood for RB67 120 and 220 film backs Cambo SCII 4x5 view camera over 50 other film cameras several eyepieces Post Extras:       tommyhawk13 sage Reged: 09/28/07 Posts: 492 Loc: Jacksonville, Fl Re: First shot at Pleaides [Re: jrw11]       #2043313 - 12/11/07 08:56 AM Edit   Reply   Quote Quick Reply   A Hartmann mask is very simple to make, and very cheap! Use this template generator to figure out what size holes to cut. You can add pieces of wire, or tape to add defraction spikes, but triangle shaped holes will do the same thing. The longer the spikes are, the better the focus. -------------------- Meade Starfinder 8,Meade SN-8 OTA, Orion Atlas, and a handfull of film cameras Post Extras:       jrw11 professor emeritus Reged: 06/09/07 Posts: 501 Loc: U.S.A. Re: First shot at Pleaides [Re: tommyhawk13]       #2043613 - 12/11/07 12:00 PM Edit   Reply   Quote Quick Reply   Thanks! -------------------- Celestron C6n -HD Reflector dual axis drive motors added Orion 80mm Short tube refractor Skyscout Early 70's Pentax 7x50 Garrett Optical 12x60 Garrett Optical 15x70 Oberwerk 20x80 Standards Canon Rebel Ti (film) 4 Minolta Srt cameras Mamiya RB67 Pro-s with 180 lens 127mm KL lens for RB, Bellows hood for RB67 120 and 220 film backs Cambo SCII 4x5 view camera over 50 other film cameras several eyepieces Post Extras:       jrw11 professor emeritus Reged: 06/09/07 Posts: 501 Loc: U.S.A. Re: First shot at Pleaides [Re: jrw11]       #2044050 - 12/11/07 03:08 PM Edit   Reply   Quote Quick Reply   In looking at how a hartman mask is made. It occured to me that the ota cap looks almost like one. the cap on my c6n has 2 smaller protuding circles at opposite ends. one has a cap that comes off. if only scope companies would make them so that both had removable caps. it would be a hartman mask that came with the scope! -------------------- Celestron C6n -HD Reflector dual axis drive motors added Orion 80mm Short tube refractor Skyscout Early 70's Pentax 7x50 Garrett Optical 12x60 Garrett Optical 15x70 Oberwerk 20x80 Standards Canon Rebel Ti (film) 4 Minolta Srt cameras Mamiya RB67 Pro-s with 180 lens 127mm KL lens for RB, Bellows hood for RB67 120 and 220 film backs Cambo SCII 4x5 view camera over 50 other film cameras several eyepieces Post Extras:       tommyhawk13 sage Reged: 09/28/07 Posts: 492 Loc: Jacksonville, Fl Re: First shot at Pleaides [Re: jrw11]       #2044226 - 12/11/07 04:35 PM Edit   Reply   Quote Quick Reply   I just used thick cardboard. -------------------- Meade Starfinder 8,Meade SN-8 OTA, Orion Atlas, and a handfull of film cameras Post Extras:       Mert scholastic sledgehammer Reged: 08/31/05 Posts: 998 Loc: Spain, Pamplona Re: First shot at Pleaides [Re: tommyhawk13]       #2057393 - 12/17/07 05:21 PM Edit   Reply   Quote Quick Reply   Hi, I also made one of cardboard ( a little bit thin ) and I asure you it works great. Never new the difference between focussing by eyes and hartman mask makes such a big difference! Regards, -------------------- ------------------ Mert 42º49"N 1º38"W 3" Unitron refractor 6" F12 SW Maksutov,CS2-S EQ6 + EQMOD Webcam with 1.25" nosepiece Post Extras:       jrw11 professor emeritus Reged: 06/09/07 Posts: 501 Loc: U.S.A. Re: First shot at Pleaides [Re: Mert]       #2057525 - 12/17/07 06:29 PM Edit   Reply   Quote Quick Reply   Thanks for all the suggestions! i was just wondering how easy it would have been if scope companies gave us the hartman mask with their newts. They just about give us most of one as it is. -------------------- Celestron C6n -HD Reflector dual axis drive motors added Orion 80mm Short tube refractor Skyscout Early 70's Pentax 7x50 Garrett Optical 12x60 Garrett Optical 15x70 Oberwerk 20x80 Standards Canon Rebel Ti (film) 4 Minolta Srt cameras Mamiya RB67 Pro-s with 180 lens 127mm KL lens for RB, Bellows hood for RB67 120 and 220 film backs Cambo SCII 4x5 view camera over 50 other film cameras several eyepieces Post Extras:       KenK sage Reged: 09/26/05 Posts: 302 Loc: MA, +41°, -71° Re: First shot at Pleaides [Re: jrw11]       #2059989 - 12/18/07 07:56 PM Edit   Reply   Quote Quick Reply   I bought an extra end cap for my orion dob from orion for like $15 and cut a couple holes in it. =) Then I actually bought another one and cut holes in it and used it for a solar filter. Works great. =) Post Extras:       jrw11 professor emeritus Reged: 06/09/07 Posts: 501 Loc: U.S.A. Re: First shot at Pleaides [Re: KenK]       #2061178 - 12/19/07 10:58 AM Edit   Reply   Quote Quick Reply   Great Ken! i called Celestron for my scope and they don't sell end caps. -------------------- Celestron C6n -HD Reflector dual axis drive motors added Orion 80mm Short tube refractor Skyscout Early 70's Pentax 7x50 Garrett Optical 12x60 Garrett Optical 15x70 Oberwerk 20x80 Standards Canon Rebel Ti (film) 4 Minolta Srt cameras Mamiya RB67 Pro-s with 180 lens 127mm KL lens for RB, Bellows hood for RB67 120 and 220 film backs Cambo SCII 4x5 view camera over 50 other film cameras several eyepieces Post Extras:       Pages: 1 Previous   Index   Next   Threaded   Extra information 0 registered and 1 anonymous users are browsing this forum. Moderator:  Suk Lee, Charlie Hein, knuklhdastnmr, ClownFish  Print Thread Forum Permissions       You cannot start new topics       You cannot reply to topics       HTML is disabled       UBBCode is enabled Thread views: 863 Jump to *International Year of Astronomy 2009* -----   Global Coordination   Cornerstone Projects   Special Projects   Special Task Groups   Global Activities   National and Regional Activities   IYA 2009 in Africa   IYA 2009 in the USA*Announcements and News* -----   Cloudy Nights Announcements   Discussion of CN Articles, Reviews, and Reports   Beginners Forum   Celestial Events   Light Pollution*Equipment Discussions* -----   ATM, Optics and DIY Forum   Binoculars   Binoviewers   Cats & Casses   Classic Telescopes   Equipment   Eyepieces   Mounts   Observatories   Reflectors   Refractors    Celestron SkyScout and Meade mySky   Video and Electronically Assisted Astronomy*Astrophotography and Sketching* -----   Beginning Imaging   Film Astrophotography   DSLR & Digital Camera Astro Imaging & Processing   CCD Imaging & Processing   Solar System Imaging & Processing   Sketching   Astro Imaging/Sketching Contest *Observing* -----   General Observing   Planetary and Solar System Observing   Lunar Observing   Deep Sky Observing   Double Star Observing   Solar   Variable Star Observing and Radio Astronomy*Telescope Specific Forums* -----   Celestron NexStar    NexStar GPS / CPC Telescopes   Questar Forum   Meade ACF/RCX / LX / GPS    Meade ETX*Other* -----   Science of Astronomy & Space exploration   AstroWebsites   Space Rocks*Speciality Forums* -----   AstroArt   Astronomy Software & Computers   Stellar Media   Astro Outreach, Clubs and Star Parties*CN Feedback and Vendor Announcements* -----   Vendor and Group Announcements Home

Cloudy Nights Sponsor: Astronomics