评论：矫正镜碎裂的LX90之衍射图案 http://www.astronomynotes.net/zh/2009/04/17/diffraction-pattern-of-my-cracked-lx90%e7%9f%ab%e6%ad%a3%e9%95%9c%e7%a2%8e%e8%a3%82%e7%9a%84lx90%e4%b9%8b%e8%a1%8d%e5%b0%84%e5%9b%be%e6%a1%88/ Your one stop portal for the latest astronomy discoveries and news. Mon, 24 May 2010 02:07:56 +0000 hourly 1 http://wordpress.org/?v=3.0 来自：Robin Lee http://www.astronomynotes.net/zh/2009/04/17/diffraction-pattern-of-my-cracked-lx90%e7%9f%ab%e6%ad%a3%e9%95%9c%e7%a2%8e%e8%a3%82%e7%9a%84lx90%e4%b9%8b%e8%a1%8d%e5%b0%84%e5%9b%be%e6%a1%88/comment-page-1/#comment-1225 Robin Lee Mon, 04 May 2009 05:10:48 +0000 http://www.astronomynotes.net/zh/?p=620#comment-1225 I just observed the moon just now. The image seems to be flawless. There is only a slight degrade of image quality when I use 12.5mm eyepiece with 2x barlow lens, resulting a magnification of 333X. Well, I will call up Meade tomorrow to see how much it cost to fix the telescope. I just observed the moon just now. The image seems to be flawless. There is only a slight degrade of image quality when I use 12.5mm eyepiece with 2x barlow lens, resulting a magnification of 333X. Well, I will call up Meade tomorrow to see how much it cost to fix the telescope.

]]> 来自：Robin Lee http://www.astronomynotes.net/zh/2009/04/17/diffraction-pattern-of-my-cracked-lx90%e7%9f%ab%e6%ad%a3%e9%95%9c%e7%a2%8e%e8%a3%82%e7%9a%84lx90%e4%b9%8b%e8%a1%8d%e5%b0%84%e5%9b%be%e6%a1%88/comment-page-1/#comment-1174 Robin Lee Sun, 03 May 2009 14:10:48 +0000 http://www.astronomynotes.net/zh/?p=620#comment-1174 I just observed the moon just now. The image seems to be flawless. There is only a slight degrade of image quality when I use 12.5mm eyepiece with 2x barlow lens, resulting a magnification of 333X. Well, I will call up Meade tomorrow to see how much it cost to fix the telescope. I just observed the moon just now. The image seems to be flawless. There is only a slight degrade of image quality when I use 12.5mm eyepiece with 2x barlow lens, resulting a magnification of 333X. Well, I will call up Meade tomorrow to see how much it cost to fix the telescope.

]]> 来自：Robin Lee http://www.astronomynotes.net/zh/2009/04/17/diffraction-pattern-of-my-cracked-lx90%e7%9f%ab%e6%ad%a3%e9%95%9c%e7%a2%8e%e8%a3%82%e7%9a%84lx90%e4%b9%8b%e8%a1%8d%e5%b0%84%e5%9b%be%e6%a1%88/comment-page-1/#comment-1166 Robin Lee Sun, 19 Apr 2009 06:03:14 +0000 http://www.astronomynotes.net/zh/?p=620#comment-1166 I am going to try to block cracked part by using a customized cardboard. It<br>will enhance the view for sure but the amount of light gathered will be<br>reduced by around 15%. A Harttman mask is not a good solution as it will block<br>quite a lot of incoming photons.<br><br>Regards.<br><br>-Robin Lee<br>Founder of CHHS Astronomy Club, Kluang, Johor, Malaysia<br>My Astronomy Blog- <a href="http://www.AstronomyNotes.net" rel="nofollow">www.AstronomyNotes.net</a><br>Or <a href="http://Astrobin.com" rel="nofollow">Astrobin.com</a> I am going to try to block cracked part by using a customized cardboard. It
will enhance the view for sure but the amount of light gathered will be
reduced by around 15%. A Harttman mask is not a good solution as it will block
quite a lot of incoming photons.

Regards.

-Robin Lee
Founder of CHHS Astronomy Club, Kluang, Johor, Malaysia
My Astronomy Blog- http://www.AstronomyNotes.net
Or Astrobin.com

]]> 来自：Filiberto http://www.astronomynotes.net/zh/2009/04/17/diffraction-pattern-of-my-cracked-lx90%e7%9f%ab%e6%ad%a3%e9%95%9c%e7%a2%8e%e8%a3%82%e7%9a%84lx90%e4%b9%8b%e8%a1%8d%e5%b0%84%e5%9b%be%e6%a1%88/comment-page-1/#comment-1165 Filiberto Sat, 18 Apr 2009 17:26:01 +0000 http://www.astronomynotes.net/zh/?p=620#comment-1165 Have you tried to use a mask in front of your corrector? maibe a Harttman mask with three circular holes could work.<br>It would reduce the light that your scope recolects but it could serve to see bright objects. Have you tried to use a mask in front of your corrector? maibe a Harttman mask with three circular holes could work.
It would reduce the light that your scope recolects but it could serve to see bright objects.

]]> 来自：Pages tagged "amateur astronomy" http://www.astronomynotes.net/zh/2009/04/17/diffraction-pattern-of-my-cracked-lx90%e7%9f%ab%e6%ad%a3%e9%95%9c%e7%a2%8e%e8%a3%82%e7%9a%84lx90%e4%b9%8b%e8%a1%8d%e5%b0%84%e5%9b%be%e6%a1%88/comment-page-1/#comment-1163 Pages tagged "amateur astronomy" Sat, 18 Apr 2009 07:19:07 +0000 http://www.astronomynotes.net/zh/?p=620#comment-1163 [...] tagged amateur astronomySoftware for Administrators: Network Inventory Software for networks! Diffraction Pattern of My Cracked LX90 | Astronomy... saved by 2 others     jirdimaster bookmarked on 04/18/09 | [...] [...] tagged amateur astronomySoftware for Administrators: Network Inventory Software for networks! Diffraction Pattern of My Cracked LX90 | Astronomy… saved by 2 others     jirdimaster bookmarked on 04/18/09 | [...]

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