Re: [Utah-astronomy] Useful website of the day
Chuck that is a good site, David truly knows his filters. On another note David also keeps a list of objects to use if one has a H-Beta Filter. It is with my H-Beta that I saw IC 434 last winter at a Rush Valley site. ........USEFUL TARGETS FOR THE H-BETA FILTER.......... While the H-Beta is probably one of the less-used nebula filters, the commonly expressed idea that it works only on a handful of objects is not necessarily true. Here is a list of some of the more prominent objects that the H-Beta may be at least somewhat useful on. Some may require larger apertures, but a few have been seen from a dark sky site by just holding the filter up to the unaided eye and looking at the sky. Some of these will also be helped by a narrow-band filter like the Lumicon UHC. 1. IC 434 (HORSEHEAD NEBULA) 2. NGC 1499 (CALIFORNIA NEBULA, naked eye and RFT) 3. M43 (part of the Great Orion Nebula) 4. IC 5146 (COCOON NEBULA in Cygnus) 5. M20 (TRIFID NEBULA, main section) 6. NGC 2327 (diffuse nebula in Monoceros) 7. IC 405 (the FLAMING STAR NEBULA in Auriga) 8. IC 417 (diffuse Nebula in Auriga) 9. IC 1283 (diffuse Nebula in Sagittarius) 10. IC 1318 GAMMA CYGNI NEBULA (diffuse nebula in Cygnus) 11. IC 2177: (Diffuse Nebula, Monoceros) 12. IC 5076 (diffuse nebula, Cygnus) 13. PK64+5.1 "CAMPBELL'S HYDROGEN STAR" Cygnus (PNG 64.7+5.0) 14. Sh2-157a (small round nebula inside larger Sh2-157, Cassiopeia) 15. Sh2-235 (diffuse nebula in Auriga). 16. Sh2-276 "BARNARD'S LOOP" (diffuse nebula in Orion, naked eye) 17. IC 2162 (diffuse nebula in northern Orion) 18 Sh2-254 (diffuse nebula in northern Orion near IC 2162) 19. Sh2-256-7 (diffuse nebula in northern Orion near IC 2162) 20. vdB93 (Gum-1) (diffuse nebula in Monoceros near IC 2177) 21. Lambda Orionis nebular complex (very large, naked-eye) In addition, a number of the brighter nebulae like NGC 7000 or M42 will respond to H-Beta use for revealing certain specific detail, although other filters may provide a somewhat better view overall. On 2010-07-16 05:09, Chuck Hards wrote:
Sorry if this has been posted before. Beginners, this one is especially good if you are new to filter use.
Yes, great site, thanks! On Fri, Jul 16, 2010 at 5:15 PM, Jay Eads <jayleads@gmail.com> wrote:
Chuck that is a good site, David truly knows his filters.
On another note David also keeps a list of objects to use if one has a H-Beta Filter. It is with my H-Beta that I saw IC 434 last winter at a Rush Valley site.
........USEFUL TARGETS FOR THE H-BETA FILTER..........
While the H-Beta is probably one of the less-used nebula filters, the commonly expressed idea that it works only on a handful of objects is not necessarily true. Here is a list of some of the more prominent objects that the H-Beta may be at least somewhat useful on. Some may require larger apertures, but a few have been seen from a dark sky site by just holding the filter up to the unaided eye and looking at the sky. Some of these will also be helped by a narrow-band filter like the Lumicon UHC.
1. IC 434 (HORSEHEAD NEBULA) 2. NGC 1499 (CALIFORNIA NEBULA, naked eye and RFT) 3. M43 (part of the Great Orion Nebula) 4. IC 5146 (COCOON NEBULA in Cygnus) 5. M20 (TRIFID NEBULA, main section) 6. NGC 2327 (diffuse nebula in Monoceros) 7. IC 405 (the FLAMING STAR NEBULA in Auriga) 8. IC 417 (diffuse Nebula in Auriga) 9. IC 1283 (diffuse Nebula in Sagittarius) 10. IC 1318 GAMMA CYGNI NEBULA (diffuse nebula in Cygnus) 11. IC 2177: (Diffuse Nebula, Monoceros) 12. IC 5076 (diffuse nebula, Cygnus) 13. PK64+5.1 "CAMPBELL'S HYDROGEN STAR" Cygnus (PNG 64.7+5.0) 14. Sh2-157a (small round nebula inside larger Sh2-157, Cassiopeia) 15. Sh2-235 (diffuse nebula in Auriga). 16. Sh2-276 "BARNARD'S LOOP" (diffuse nebula in Orion, naked eye) 17. IC 2162 (diffuse nebula in northern Orion) 18 Sh2-254 (diffuse nebula in northern Orion near IC 2162) 19. Sh2-256-7 (diffuse nebula in northern Orion near IC 2162) 20. vdB93 (Gum-1) (diffuse nebula in Monoceros near IC 2177) 21. Lambda Orionis nebular complex (very large, naked-eye)
In addition, a number of the brighter nebulae like NGC 7000 or M42 will respond to H-Beta use for revealing certain specific detail, although other filters may provide a somewhat better view overall.
On 2010-07-16 05:09, Chuck Hards wrote:
Sorry if this has been posted before. Beginners, this one is especially good if you are new to filter use.
http://pages.sbcglobal.net/raycash/filters.htm
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Jay, this is excellent advice. Often, newbs will hesitate to push the envelope. Don't be afraid to use other filters than the ones mentioned on the website or in the article. Good post! I would add, dont' be afraid to use the filter held up to your naked eye, especially on larger nebulae such as NGC 7000. I learned this trick from the late Walter Scott Houston, decades ago, when interference filters were in their infancy. On 7/16/10, Jay Eads <jayleads@gmail.com> wrote:
In addition, a number of the brighter nebulae like NGC 7000 or M42 will respond to H-Beta use for revealing certain specific detail, although other filters may provide a somewhat better view overall.
participants (3)
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Chuck Hards -
Craig Smith -
Jay Eads