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ZachK
professor emeritus
Reged: 08/21/05
Posts: 769
Loc: Israel
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I finally got my 4x5 view camera complete. I now have a 150mm/F5.6 Caltar Lens and 1 film holder. so With a box of Provia 100F in my freezer I'm thinking tonight might be a good time to take it out and try some star trails, that is of course if the weather is good. I don't have an equatorial mount yet, so trying anything tracked will not be possible.
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Zach Kessin
Ariel Israel
Orion XT10i, Stratus 5, 13 & 21, random Plossls
15x70 Celestron Skymaster Binoculars
Two little boys who like using the scope with their dad
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Suk Lee
Post Laureate
Reged: 10/07/03
Posts: 4534
Loc: Pleasanton, CA
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Cool. Watch out for film expansion, particularly if it's humid out.
If you get the image back and the edges are sharp but the center out of focus, the film flexed away from the holder and you'll need a vacuuum back.
Suk
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ZachK
professor emeritus
Reged: 08/21/05
Posts: 769
Loc: Israel
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Thanks Suk. I haven't had a chance to do this yet. I'm not sure when I will, maybe thursday night from my back porch. I lost my job so I no longer have a car (It was a company car). With luck that will be fixed as soon as I get a new job.
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Zach Kessin
Ariel Israel
Orion XT10i, Stratus 5, 13 & 21, random Plossls
15x70 Celestron Skymaster Binoculars
Two little boys who like using the scope with their dad
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Suk Lee
Post Laureate
Reged: 10/07/03
Posts: 4534
Loc: Pleasanton, CA
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 Sorry to hear about your job -- good luck with the hunt for the next one!
Suk
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ZachK
professor emeritus
Reged: 08/21/05
Posts: 769
Loc: Israel
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Thanks, actually I found something Already (Thank G-d). It is a good bit more money, but doesn't come with a car, so I will have to get one. And with luck its enough to let me buy some cool astronomy toys. (The big question is what to buy first, and Equitorial mount for photography, or a mirror to build a big dob around).
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Zach Kessin
Ariel Israel
Orion XT10i, Stratus 5, 13 & 21, random Plossls
15x70 Celestron Skymaster Binoculars
Two little boys who like using the scope with their dad
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Achernar
Postmaster
Reged: 02/25/06
Posts: 7805
Loc: Mobile, Alabama, USA
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I've tried star trails once with a 4x5-inch view camera, and found the negative out of focus in the center after I developed them. It seems the film expanded, bowed and ruined the photos everyone. I'd rather use my Nikon F-3 for star trails, it's a much easier camera to work with.
Taras
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15-inch F/4.5 Homebuilt truss-tube Dob with Sky Commander digital setting circles.
10-inch F/4.5 Discovery Dob with JMI digital setting circles.
6-inch F/8 Homebuilt Dob
24, 18, 14, 11, 8.8, 6.7, 4.7mm ES 82 degree eyepieces.
21, 13, 8, 5 and 3.5mm Orion Stratus eyepieces.
Two Televue T-1 Paracorrs with tunable tops
Orion and Lumincon Deepsky, Ultrablock, O-III and H-beta nebula filters.
Three curious and needful cats
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ZachK
professor emeritus
Reged: 08/21/05
Posts: 769
Loc: Israel
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Well I figure its worth a shot, if not I'll use my Rollei to do them, medium format is pretty good 
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Zach Kessin
Ariel Israel
Orion XT10i, Stratus 5, 13 & 21, random Plossls
15x70 Celestron Skymaster Binoculars
Two little boys who like using the scope with their dad
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StarLane
member
Reged: 05/09/07
Posts: 86
Loc: Gold Coast, QLD, Australia
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I would love to see the result Zach.
4x5 will give you top draw definition. The sharpness, resolution and clarity of medium and large format film can't be matched by digital.
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Paul
BT-252 10inch F5 newt/dob with Crayford 10:1 fine focuser, Stellarvue ED80 NHNG #303 with SV dielectric 2inch diagonal, Pentax 30mm XW, TV 24mm Panoptic, Hyperion 17mm, Pentax 10mm XW, Hyperion 5mm, Burgess/TMB Planetary 7mm, 4mm and 3.2mm, Lumicon 2inch UHC filter, AOE 20x80T (triplet) binos, Fuji S3pro DSLR, 5 x Nikon film SLR`s and a variety of Nikon lenses.
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AstroBobo
sage
Reged: 07/04/07
Posts: 404
Loc: Zagreb, Croatia
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It would be a pity not to try star trails with this camera, IMHO. I'm looking forward to seeing the results!
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Boris Stromar : AD Infinitum member : Zagreb, Croatia, Europe
P75SDHF : P105SDP : MN71 : CGE : STL-11000
http://www.astrobobo.net
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ZachK
professor emeritus
Reged: 08/21/05
Posts: 769
Loc: Israel
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now that I have the camera working I plan to. It will have to wait until I can get to the negev, and I'm not sure when that will be as i will be spending most of August in the USA, and I won't be bringing the Sinar with me, its just too *word deleted by Otto Sinsore* big.
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Zach Kessin
Ariel Israel
Orion XT10i, Stratus 5, 13 & 21, random Plossls
15x70 Celestron Skymaster Binoculars
Two little boys who like using the scope with their dad
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