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Photographing Comet Hale-Bopp all 4 layers, and unsharp mask. Hope this helps Ben -- Ben Woodruff, November 16, 1999 This article talks about only simple astrophotos, if you are taking pictures of Orion through a 12 inch telescope, you'll have more problems to worry about. A typical photo of deep space objects are going to last about 30 minutes or sometimes even longer. To eliminate the star circles you'll need a clock drive on the telescope set at the same speed the Earth is spinning at. Because you are not using a lens, you don't have to worry about expensive fast telephoto lenses, but you do need a fast telescope, f4 - f5(f5 on a camera lens is slow, but it's very fast for a telescope), a f10 telescope will take forever. Also, you should use a camera that has a mirror locking feature, a mirror slap can cause an object in space to move thousands of miles. You'll probably want to use a manual camera, since some auto SLRs can't hold the shutter open for 40 minutes, or if it can, the battery will get drained quickly on a cold night. -- Roy J, December 10, 2000 Capturing images of beautiful yet elusive celestial objects is a thrilling experience for me. Like no other form of art, astrophotography empowers its participants to look back in history by taking pictures from photons that take millions of years to travel through the vast universe. Like other form of photography though, it requires both technical skills and aesthetic visions. My passion with astrophotography focuses mainly on capturing dazzling images of galaxies, nebulae or comets etc. on film. There are other areas of astrophotography (CCD-based or scientific-oriented) which I'm not going to discuss here. Most astrophotos we see on magazines or posters (except those featuring images taken by profesisonal observatories or the famed Hubble Space Telescope) require a camera coupled with a telescope or a long focal-length telephoto lens mounted on a equatorial mount. In general, the focal-length of the telescope/lens depends on the size of the object. The exposure time depends on the brightness of the object and focal-ratio of the optics. A good way to start taking astrophoto is to buy a used Schmidt Cassegrain type telescope (about $400- $800) with 8" aperture (such as the CelesXXon or the MeaXX brand). These telescopes are well suited for basic astrophotography of galaxies, star clusters, comets, moon, some planets and nebulae. They usually come complete with tripod, electronics (guiding system) and accessories (eyepieces). Exposure is usually long (from minutes to hours) and the guiding procedure can be tedious but the results are rewarding. Use fast films (ASA 400 - 800) or better yet, use hypersensitized films. Movements (wind, vibration etc) must be avoided and the atmosphere should be steady and the sky as dark as possible. A good source of reference is the "Sky and TelesXXpe" magazine or the "AstrXXomy" magazine. Have fun star-hopping and picture-taking!!! The author uses a PXXtax LX body, PXXtax SDHF 100 ED refractor with f/3.6 adaptor and PXXtax MS-4 mount. -- Tak-Ming Leung, March 9, 2001 Have you ever thought about fujipress 1600??? The grain is razor sharp. Or what about b&w?????????????????????? does anybody ever try this with either a 200 or a 300??? you could get some good stuff. If you are just going for the stars, not a comet or anything, try this. Get some slow film (100-200 should do it). point a short zoom lens (35-70 or 28-80) at the north star, hold the shutter open for 2 min, and as you do, turn the zoom ring. Good times -- Rockne Roll, April 20, 2003 http://www.photo.net/astro/intro (5 of 6)7/3/2005 2:14:43 AM Add a comment
Photographing Comet Hale-Bopp Related Links ● Wide-Field Astrophotography Page- If you'd like info about tracking (barndoor) mounts, or if you want to be really envious of some terrific comet photos, see Brian Rachford's excellent Wide-Field Astrophotography Page. -- An updated link with a little help from google.com (contributed by David H. Hartman) ● Astrophotographer Jason Ware Featured at PixiPort- Jason Ware's AstroPhotography prints have been featured in several major magazines and catalogs. Here is a partial list: Nov.1993,Sky & Telescope Magazine,page 46. -Lagoon and Trifid Nebula. Jan. 1994,Astronomy Magazine,page 103. -Andromeda Galaxy. May.1994,Sky & Telescope Magazine,page 113. - Orion Nebula Jul. 1994,Astronomy Magazine,page 82. -Pelican Nebula. 1994-1995,Meade Instruments, Inc. Catalog Orion Nebula Region, page 27. Veil Nebula, page 29. Andromeda Galaxy, page 30. Jan. 1995,Astronomy Magazine,page 66/67. - Rosette Nebula. About the Photographs ALL of the photographs were taken using Meade Instruments telescopes. The photographs of nebulae and galaxies were taken using auto-guided time-exposure photography on Fuji HG400 film(120 format). The original exposures, lasting between 2 and 3 hours, were then copied onto Kodak Vericolor Transparency film, from which an internegative was made for the final print. Each step increases contrast and color saturation. The moon photo was a short exposure on Kodak Technical Pan film. (contributed by Helyn Davenport) ● Tripod Astrophotography- For anyone interested in building a "tangent arm drive",there are plenty of links to whet most appetites. (contributed by Mike Nicholson) Add a link © 2000-2005 Luminal Path Corporation and contributors. Contributed content used with permission. About Us | Photo.net FAQ | Subscribe! | Related Sites | Contact Us | Terms of Use | DMCA Agent | Privacy Disaster Recovery | Concert Tickets | Discount Bridesmaid Dresses Sponsor: Digital Camera HQ - Excellent reviews of Pentax digital cameras http://www.photo.net/astro/intro (6 of 6)7/3/2005 2:14:43 AM
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