1969 Apr SKY & TELESCOPE Mariner probes SOLAR OBSERVATORY Pulsars CRAB NEBULA &c

Description: Title: Sky and Telescope Date: April, 1969 Pagination: about 60pp (pp 207–266 in this issue) Condition: Acceptable reading copy; covers scuffed and a bit dingy from storage; no address label visible; some issues in this collection have had a bit of highlighting (they belonged to an Astronomy teacher); this issue was accidentally folded vertically in storage, so the entire is lightly but noticably creased (see photos), but appears complete [OCR is approximate, as always] APRIL, 1969 COVER: The new San Fernando Observatory, operated by Aerospace Corp., stands on the end of a peninsula and overlooks a Los Angeles reservoir. The main instrument is a 24-inch reflector that feeds a vacuum spectro-heliograph. At far right is a 6-inch refractor used for patrol observations in the red light of hydrogen. On the ground is a pair of small visual instruments. Aerospace Corp. photograph. (See page 208.) A NEW SOLAR OBSERVATORY IN CALIFORNIA —E. B. Mayfield, D. Vrabec, E. Rogers, T. Janssens, and R. A. Becker 208 THE 1968 TEXAS SYMPOSIUM: PULSARS — Louis C. Green 214 MARINERS TO FLY PAST MARS 218 THE PERKINS 72-INCH TELESCOPE IN ARIZONA — John S. Hall and Arne Slettebak TWO PROBLEMS IN GRAVITATION - I! — Herbert J. Rood TELEVISION OBSERVATIONS OF THE CRAB NEBULA PULSAR A MESSIER ALBUM — 24 John H. Mallas and Evered Kreimer AMATEUR ASTRONOMERS Amateur Activities in Trinidad - R. Barrow Reworking a School Telescope — Robert A. Yajko ASTRONOMICAL SCRAPBOOK Some Questionable Comets BOOKS AND THE SKY Trackers of the Skies Observation in Modern Astronomy Visitors From Afar: The Comets CELESTIAL CALENDAR Some Little-Known Variables Occultation Highlights - April-August, 1969 - David W. Dunham GLEANINGS FOR ATMs A 6-inch Springfield Telescope with Remote Reading Dials — John K. Newell Testing a Schmidt Corrector at a Finite Distance - J. J. Labrecque A Detroit Amateurs Rich-Field Refractor — Barry C. Carter NEWS NOTES OBSERVERS PAGE Ospiny 500nd Flares Wolfe Scot Cosser H. Hossfield RAMBLING THROUGH APRIL SKIES Take a close look at the auction images for details of contents and condition. If you have any questions at all please send a message through eBay before bidding. NOTE: There may be more images in this listing than eBay shows in the top "gallery". Be sure to scroll down to view the full set, if so. Be sure to check our eBay Store for thousands of other listings like this one. Orders will be sent out within three business days of receipt of payment. If youre in a hurry and would like expedited shipping (Priority or Express shipping), please let us know before paying so we can adjust your invoice. Books are sent Media Rate within the US, and other small items are sent Parcel by default. If you would like combined shipping, please (1) contact us to let us know, and then (2) wait to pay until youre finished shopping (but try to keep it within a 4 day period, please). Just leave the items in your eBay Cart and then request an updated invoice after youre done. If you pay for an item, we are obliged to ship it to you, and cannot combine it with subsequent purchases. If youre waiting for a separate auction item to finish, please contact us to let us know. _gsrx_vers_1680 (GS 9.8.3 (1680))

Price: 6.65 USD

Location: Ann Arbor, Michigan

End Time: 2024-11-28T17:23:41.000Z

Shipping Cost: N/A USD