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Group Information

  • Members: 4264
  • Category: Astronomy
  • Founded: Jul 8, 1999
  • Language: English
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Activity within 7 days:

5 New Members - 140 New Messages - 9 New Photos - New Questions

Description

A mailing list for the users of commercial Schmidt Cassegrain Telescopes hosted by the inimitable "Uncle" Rod Mollise. Users of the similar Maksutov Cassegrains, including the ETX, the Questars, and the INTES MAK-CAS telescopes are also welcome....

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Re: Secondary centering
... I forgot to finish that: by "fix" I meant removing the corrector to fix it. But move the sec so it's centered in the hole, and then follow Robert
Posted - Wed Jan 6, 2010 11:05 pm
 John Mahony
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Re: Secondary centering
That's another major possibility. Peace, Rod Mollise Rod's new book: _Choosing and Using a New CAT_ Available Now! <http://skywatch.brainiac.com/astroland> ...
Posted - Wed Jan 6, 2010 10:14 pm
 Rod Mollise
rmollise
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Re: Secondary centering
I've heard of one case where a person managed to tighten his sec holder by pulling outward on the holder (to snug the inner sec baffle against the corrector)
Posted - Wed Jan 6, 2010 10:01 pm
 John Mahony
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Re: Secondary centering
If by "differential refraction" you mean the color effect of atmospheric dispersion, I don't think it's that, since that produces obvious color differences,
Posted - Wed Jan 6, 2010 9:54 pm
 John Mahony
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Re: free telescope..!
The one I've seen has a simpler lens hood (cut straight instead of angled), and a basic 90 degree diagonal instead of the odd ball-shaped 45 degree one shown
Posted - Wed Jan 6, 2010 9:47 pm
 John Mahony
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Message History

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2010 133
2009 656 169 515 459 446 484 303 232 152 326 284 202
2008 835 676 393 549 641 388 807 683 678 318 436 300
2007 1047 874 538 596 287 631 695 619 451 812 830 652
2006 920 1008 885 1155 1220 882 1002 705 466 650 686 579
2005 890 1103 793 862 637 551 688 1112 1033 1027 711 790
2004 1158 1272 1122 739 752 758 821 660 645 588 526 747
2003 1090 1031 1138 1120 1063 1066 1082 954 808 758 779 692
2002 1128 1519 1733 975 1132 1120 1119 693 942 701 864 904
2001 2152 1824 1965 1351 1442 1811 1557 1866 1443 1299 1425 1434
2000 959 1349 962 1115 1174 1692 1222 1055 1155 1586 1346 1311
1999 428 637 870 478 699 764
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