|
DesertRat
professor emeritus
Reged: 06/18/06
Posts: 663
Loc: Valley of the Sun
|
Re: what's up with SHS yahoo group?
06/30/09 10:38 PM
|
|
|
Gene,
You may be correct after all, sortof. Before Hale built the SHS he built the SHG or spectroheliograph which I believe in some configurations did scan the image by turning the drive off. Other models by him, and Deslandres in France, scanned with a moving slit.
Glenn
--------------------
Brandon 94mm f7, Televue TV102 f8.6; GM8
Baader Wedge & Filters, Coronado SM90/BF30
IM715; C11 & C14; G-11 Gemini
|
|
6 registered and 5 anonymous users are browsing this forum.
Moderator: Don W, spaceydee
|
Forum Permissions
You cannot start new topics
You cannot reply to topics
HTML is disabled
UBBCode is enabled
|
Rating:
Thread views: 808
|
|
|
|
|
|
|
Previous
Index
Next
Flat
Edit
Reply
Quote
