The Aries SAFIX [User Review]  | 06/29/03 | by Rod Mollise Spherical aberration is something that troubles amateur astronomers no matter which design of scope they use. In any telescope, if the objective, primary m. . . Celestron C14 [User Review]  | 06/27/03 | by Paul Atkinson According to Celestron the limiting visual magnitude is 15.3 and photo magnitude is somewhere near 18. Impressive for a scope this size. The resolution is . . . Getting Started with a SAC CCD Camera [Article]  | 06/24/03 | by Mark Estes The SAC imaging camera represents an easy way to break into astrophotography. The cameras are easy to use but its more advanced capabilities will provide y. . . Post Mortem of a Celestron Firstscope 114 [User Review]  | 06/22/03 | by Daniel W. Rickey, Ph.D. This review, like many other reviews, is of a used telescope with unknown history. This particular example (shown in Figure 1) was purchased from a pawn sh. . . Celestron NexStar 4 GT [User Review]  | 06/21/03 | by John Zimmerman The N4 is made in China. I give it mixed marks for construction quality. On the positive side, construction is very solid - aluminum is used extensively in. . . Sirius Optics NPC Neodymium Eyepiece Filter [User Review]  | 06/20/03 | by David Knisely Although color filters generally do have some limited applications for planetary viewing in bringing out certain detail, I have never a huge fan of them. I. . . Zeiss Filters [User Review]  | 06/17/03 | by Gary Beal I have been thinking for some time now to share my experiences with the selection of filters designed and manufactured by Zeiss. It has taken some years t. . . ST-7Ei CCD Camera...A Poor Man’s ST-7E? [User Review]  | 06/16/03 | by Eric Africa he ST-7i is a limited run of CCD cameras offered by the renowned manufacturer of astronomy CCD cameras, Santa Barbara Instruments Group (SBIG). According t. . . Casio QV2800 [User Review]  | 06/15/03 | by So King Yan Oldfield I obtained my Casio QV2800 in the hope to use it for two purposes: afocal astrophotography and daily snapshots. I bought it more than two years ago. I p. . . Nikon Coolpix 775 CCD [User Review]  | 06/15/03 | by Rodrigo Garcia Conventional astrophotography began with a lot of fans, many amateur astronomers entered this branch of astronomy with many expectations, but when they dis. . . SAC-IV CCD Camera [User Review]  | 06/15/03 | by Eric Africa The SAC-IV is an entry-level astronomical imaging camera. Based on a Sony “HAD” chip (ICX098Ak), it offers 24-bit color in a 640x480 pixel (5.6 micron) arr. . . Can SBIG's [User Review]  | 06/15/03 | by Tom Mote, Ph.D. Let me begin by saying that my seventy-seven year old eyes, even after the cataract surgery so successfully performed a couple of months ago, aren't nearly. . . Philips ToUcam Pro (and similar webcams) [User Review]  | 06/15/03 | by Boris Stromar In recent years, webcam imaging has become increasingly popular among amateur astronomers. It is easy to see why: they are inexpensive (< $100) and it is p. . . Philips ToUCam Pro [User Review]  | 06/15/03 | by So King Yan Oldfield I obtained my ToUCam Pro when the Hong Kong Astronomical Society join ordered it from oversea. We have obtained so many of them such that the whole package. . . CN Report: Classic UO Orthos VS HD UO Orthos [CN Report]  | 06/15/03 | by Tom Trusock Are the HD's really an improvement over the classic UO orthos? Take a look. . . Hallowe'en weekend observing [Article]  | 06/12/03 | by Jay Reynolds Freeman The sky was quite transparent, but the low-level glow was a bother. I reviewed a handful of Messier objects and some other autumn showpieces, then targe. . . A Warm Winter's Night at Fremont Peak [Article]  | 06/12/03 | by Jay Reynolds Freeman Summer should come in winter more often. I love the early sunsets, short twilights, and long nights of winter, but it sure would be nice to have shirt-s. . . Observing Experiments in Vision [Article]  | 06/07/03 | by Tom Mote, Ph.D. Most research papers begin with a discussion of an educated guess stated in a very formal manner and referred to by the author as an experimental hypothesi. . . hcAnywhere: The next generation of NexStar GPS telescope control [User Review]  | 06/05/03 | by Jeff Richards In late February of 2003, a good friend of mine, Mike Zeidler, from north of the border asked me if I would like to be involved with beta testing an exciti. . . Orion SkyviewPro 120mm Refractor, F/8.3 EQ (A Beginners Perspective) [User Review]  | 06/04/03 | by Jason B. What in the world are they shipping this scope with, glue!?? It was so tight, that I only got frustration at high power. So I removed the focuser plate (4 . . . CN Report: A Comprehensive look at Binocular Parallelogram Mounts [CN Report]  | 06/01/03 | by Ed Zarenski Are you secure in your knowledge of parallelogram mounts? If not, "professor" Ed Zaresnki will educate this in this comprehensive article . . .