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Variable Star Section Circular

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BAA The British Astronom ical Association VARIABLE STAR SECTION INDEX TO CIRCULARS 12 - 70 JULY CIRCULAR 71 1990 ISSN 0267-9272 Office: Burlington House, Piccadilly, London, W1V 9AG SECTION OFFICERS Director J.E. Isles, PO Box 6322, Limassol, Cyprus Tel: Limassol (010 357 51) 23166 Eclipsing binary charts are available from, and bulky material should be sent to: Mrs Elizabeth Isles, 20 Berkeley Square, London W1X 6DT NB: for routine enquiries contact M.D. Taylor Assistant Director S.R. Dunlop, 140 Stocks Lane, East Wittering, & Circulars Editor Chichester, West Sussex PO20 8NT Tel: Bracklesham Bay (0243) 670354 Email: Microlink: MAG100665 JANET: MAFD5 @UK.AC.SUSSEX.CLUSTER Secretary M.D. Taylor, 17 Cross Lane, Wakefield, West Yorkshire WF2 8DA Tel: Wakefield (0924) 374651 Chart Secretary J. Toone, 2 Hilton Crescent, Boothstown, Worsley, Manchester M28 4FY Tel: 061 702 8619 Noval Supernova G.M Hurst, 16 Westminster Close, Kempshott Secretary Rise, Basingstoke, Hants. RG22 4PP Tel: Basingstoke (0256) 471074 Email: Microlink: MAG60138 JANET: GUYH @ UK.AC.SUSSEX.CLUSTER P rof J Am. Liason Roger Pickard, 28 Appletons, Hadlow, Comm. Secretary Kent TNI 1 0DT Tel: Tonbridge (0732) 850663 Email: Microlink: MAG70304 Computerization D. McAdam, 33 Wrekin View, Madeley, Telford, Secretary Shropshire TF7 5 HZ Tel: Telford (0952) 452048 Email: Microlink: MAG 11851 Telephone Alert Numbers The following numbers may be called at any time up to 23:00 UT (or BST when in operation) to report variable-star activity, or at any time during the night for possible novae only: Guy Hurst 0256 471074 Graham Keitch 0934 862924 Denis Buczynski 0524 68530 For subcription rates and charges for charts and other publications see inside back cover. BRITISH ASTRONOMICAL ASSOCIATION ' VARIABLE STAR SECTION INDEX to CIRCULARS Nos. 12 to 70 Introduction Circulars were issued in the early years o f the Variable Star Section by Col. E.E. Markwick (Director 1900-10), but there are no copies of these in the Section’s archives. The present series is numbered from VSS Circular 1 of 1922 March 31, produced by Dr F. de Roy (Director 1922-39). Ten more appeared over the next 13 years, discussing changes in charts and comparison star sequences, Section appoint­ ments, meetings and various administrative matters. They were printed by letterpress and ranged from one to four sides of octavo. The VSS Circulars were revived in 1972 May by the writer during a previous incarnation as Director. No 12 comprised ten quarto sides o f which five were (ominously?) devoted to a new project on eclipsing binaries. Until 1982, the Circulars were duplicated from stencils cut on a typewriter, a job Storm Dunlop did from No. 13 o f 1972 July. In 1975 he also took on their distribution, and about five years later, though this was not announced at the time, he became their Editor. Several improvements in the format of the Circulars were master-minded by Storm. No 53 o f 1983 March/April was the first to appear in the form of an A5 booklet in the now familiar yellow cover. The printing was by offset litho, so that illustrations could now be included more easily. The text was set up using a word processor and die appearance of typescript was finally eliminated with issue 68 of 1989 January, for which the masters were produced on a laser printer. Meanwhile, the Circulars have grown to around 36 inside pages per issue, and have become an important journal of variable-star astronomy. For many years we have felt the need for an index to VSS Circulars, and Peter Wheeler has now provided one, to which this issue is devoted. We decided not to include Circulars 1 -11, which are only of historical interest I am sure all readers will wish to join me in thanking Peter for this magnificent and valuable work. John Isles Director Please note that page numbers in Roman numerals indicate pages of P^LC Newsletter, published in Circulars 68,69, & 70 ' Administrative changes - 70,1 Alert arrangements for the VSS - 6 6 ,6-7; 67,1 Algol (Beta Per) - 61,13 Algols and Amateurs - Dave Wonnacott - 70,34-35 Amateur Variable Star Directory - 4 3 ,2 American Association of variable Star Observers (AAVSO) Circulars - reports and subscription - 12,3 European Meeting in Brussels 1990 July 24-28 - 6 9 ,29; 70,36-40, iv ANDROMEDA Galaxy [M31] J. Bryan - 62, 8-13 R - 13,1; 17,2; 1973 - 18,4; 1974 - 23, 5; 1975 - 3 0 ,1; 1976 - 32, 3; 1977 - 3 7 ,2; 1978 - 4 2 ,2; chart 4 9 ,6; 1983 - 5 7 ,2; 1986 - 66, 24; 69, 19 S - 61,12 W - 3 0 ,4; 1977 - 3 7 ,2; 1978 - 42, 2; 1983 - 5 7 ,2; 1986 - 66,24 Z - 7 0 ,6 RS - sequence 3 8 ,1-2; 1986 - 6 5 ,6; 68,37 RT - 60,18; 63,21; 66,33; 70,18 RW - 3 0 ,4; 1977 - 3 7 ,2; sequence 4 2 ,1; 1978 - 4 2 ,2; chart 4 4 ,1; 1983 - 5 7 ,2; 1986 - 66,24 RX - 13,1; 1973 - 18,4; 1974 - 23,5; 1975 - 30,1; 1976 - 32,3; 1977 - 37,2; 1978 - 42,2; 1983 - 57,2; 60,11; 63,11; 1986 - 66,24; 69,19 SS - 59,12 SU - sequence 3 8 ,1-2; 1986 - 6 5 ,6; 70,6 TW -60,17-18 TZ - sequence 3 8 ,1-2; 1986 - 6 5 ,6; 68,37 VX - 5 9 ,10-11; 68,2-4, chart 5 ,7-8; 70,9-10 WW - 5 9 ,1 5 ,15; 60,17-18 WZ - 5 9 ,16; 6 0 ,18; 6 1 ,16; 6 3 ,20-21; 66,33 AB - 6 0 ,18; 6 1 ,16; 6 3 ,21; 6 6 ,33; 70,17-18 A D -60,17-18; 61,16;63,21 AQ - chart, 2 6 ,2; sequence 5 1 ,4; 6 6 ,4; 6 8 ,37; 7 0 ,8 AR - 25,1 BX - 5 8 ,13; 5 9 ,16; 6 3 ,21; 6 6 ,33; 70,18 BZ - sequence 51,4; 6 0 ,17-18; 66,4; 70, 3 CD - 63,20-21 C N -64,12-13 DS - 5 1 ,6; 5 9 ,16; 6 1 ,16; 70,18 D X - 6 9 ,3; 7 0 ,6 2 Andromeda (cont.) DZ - 1 7 ,2; 2 2 ,3; 1974 - 2 3 ,5; 1975 - 3 0 ,1; 3 4 ,1; Chart, 3 5 ,3; 1977 - 3 7 ,2; 1978 - 4 2 ,2; 1983 - 5 7 ,3; 1984 - 6 2 ,13; dropped 6 6 ,5; 1986 - 66,24 EG - 6 5 ,18; 70,6 EU - 68,2-4, chart 5 ,7-8; 70,9 FN - 69, 2; 7 0 ,6 FO - 57,15 HP - 69,2; 70,6 KK - 65, 18 KY - 65,18 LL - 6 9 ,2; 70 ,6 LO - 63,21 LS - 69,2; 70,6 O S -7 0 ,6 Kappa - 65,14 Omicron - 65,18 Nova 1986 - 66,29 NSV 895 - 69,2 BS551 [SAO 037607] - 59,1; 61,9; 65,4; 67,26-29 ANTLIA T - 65,24 Apertures recommended - 18,6 APUS S - 56 ,9 AQUARIUS RY - 63,21 ST - 63,21; 66,33,34 SU - 60,18 VY - 1 7 ,2; 52, 3; 1983 - 57, 3; 1984 - 6 2 ,13; 65, 32; chart 6 6 ,1 1; 1986 - 66,24,67,1,69,3 AE - 7 0 ,6 DX - 66, 34 EG - 6 9 ,3; 70,6 Omicron - 65,18 Pi - 65,18 AQUILA R - sequence 1 3 ,1-2; 1 7 ,2; 1973 - 18,4; 2 2 ,3; 1974 - 2 3 ,5; 2 5 ,2; 1975 - 3 0 ,1; 1976 - 32,3; 1977 - 37,2-3; 1978 - 42,2; 1983 - 57,3; 1986 - 66,24 U - 65,24 V - 3 4 ,2; 1986 - 6 5 ,6; 6 8 ,3 7 ,43; 70,8 3 Aquila (cont.) SZ - 65.26 ΤΓ - 65,26 UU - 1 3 ,1; chart, 1 5 ,3; 1973 - 18,4; 1974 - 2 3 ,5; 1975 - 3 0 ,1; 1976 - 32, 3; 1977 - 37,3; sequence 4 2 ,1; 1978 - 4 2 ,2; 1983 - 57, 3; 1986 - 6 6 ,24; 69,19 UW - 1 3 ,1; sequence 1 8 ,2; 1973 - 2 1 ,2; 1974 - 23, 5; 1975 - 3 0 ,1; 1976 - 32, 3; 1977 - 37, 3; 1978 - 42,2; 1983 - 57, 3; 1984 - 6 2 ,13; 1986 - 66,25 CI - 6 9 ,3; 7 0 ,6 FM - 65,24 FN - 65,24 KO - 6 1 ,15-16; 70,18 K P-63,21; 70,18 OO - 59, 16; 6 0 ,18; 6 1 ,16; 6 3 ,21; 66, 34; 70,18 QY - 66,34 V342 - 7 0 ,18 V346 - 6 1 ,16; 6 3 ,21; 70,18 V450 - chart 2 6 ,2; 68,26, chart 27, 37 V496 - 65,24 V603 - 44, 8; 4 7 ,2; 1984 - 6 2 ,13; 1986 - 6 6 ,25; 70,3 V725 - 6 9 ,3; 7 0 ,6 V794 - 55,1 V822 - 1 4 ,2; 26, 3; 5 8 ,1 2 ,13; 59,14-16 V889 - 60,17-18 V923 - 65,18 VI162-65,24 V1229 [Nova 1970] 69,19 V1293 [CSV 1011855] - 22, 3; chart, 2 6 ,2; 68,26, chart 27, 37 V1294 - 5 4 ,5; 6 5 ,18; 68,26, chart 27 V1295 - 65,18 V1339-65,18 V1344 - 65,22 V1370 [Nova 1982] - 56, 10; 58,8 NSV 12088 [CSV 101849] - 26,2 Eta - 5 3 ,12; 66,1 CSV 101849 - 26,2 ARA V340 - 65,26,27 Argelander’s Method - 2 2 ,1; 51,7-8 ARIES R - 1 3 ,1; dropped 17,2; 1973 - 1 8 ,4; 1974 - 23, 5; 69, 21 4 Aries (cont.) V - chart 2 6 ,2; 6 6 ,4; 68, 37; 69,29, chart 30 RR - 68,12 RX - 63,21 SS - 6 0 ,18; 6 1 ,16; 6 3 ,20-21; 66, 33,34 SV - 6 9 ,2; 70 ,6 TT - 70, 3 Astronomer, The, Rates and services - 66,6-7 Atlases for Variable Star Observers - Part 1 - 54,12 AURIGA R - 1 3 ,1; dropped 1 7 ,2; 1973 - 1 8 ,4; 1974 - 23, 5; 69,21 X - 1 3 ,1; dropped 1 7 ,2; 1973 - 1 8 ,4; 1974 - 23, 5; 69,21 RT - 65,24 RW - 1974 - 24,4; 25,2; 1975 - 30,1; 1976 - 32, 3; 1977 - 37, 3; 1978 - 4 2 ,2; dropped 48 ,6 SS - 13,1; 1973 - 18,4; 1974 - 23, 5; 2 5,1; 1975 - 30,1, 3; 1976 - 3 2 ,3; 1977 - 3 7 ,3; sequence 4 2 ,1; 1978 - 4 2 ,2; 1983 - 5 7 ,3; 1986 - 66,25; 69,19 SU - 1974 - 2 4 ,4; 2 5 ,2; 1975 - 3 0 ,1; 1976 - 32, 3; 1977 - 3 7 ,3; 1978 - 4 2 ,3; dropped 48 ,6 SX - 59,16; 6 1 ,16; 63,20-21; 70,18 TT - 58,13; 63,20-21; 66,34; 70,18 UU - 3 4 ,2; 4 4 ,7 ,12; 70,8 UV - 70,13-14, chart 15 WW - 2 6 ,2; 5 8 ,13; 5 9 ,16; 6 1 ,8; 6 3 ,21; 66,34 AB - 2 2 ,3; 2 6 ,1; 70 ,8 A M - 5 1 ,6; 60,17-18 AR - 5 6 ,5-6; 5 8 ,13; 6 0 ,18; 6 1 ,16; 6 3 ,22; 70,18 BF - 5 9 ,16; 6 3 ,2 0 ,22; 66, 34 CO - 1 7 ,1; 1974 - 2 3 ,5; 1975 - 3 1 ,9; 3 4 ,2; 5 4 ,5-6; 5 7 ,15; dropped 59,1 EO - 66,34 HL - 6 0 ,18; 6 1 ,16; 63,22 IM - 5 8 ,13; 5 9 ,16; 6 0 ,18; 6 3 ,2 0 ,22; 6 5 ,14; 66, 34; 70, 18 IU - 6 3 ,22; 66, 34; 70,18 L V -5 9 , 16 LY - 5 8 ,13; 6 3 ,2 0 ,22; 66, 34; 70,1 7 ,1 9 NO - 22, 3; chart, 2 6 ,2; dropped 67,1 Epsilon - 5 1 ,10; 55, 1; 5 7 ,1 ,15; 63, 13; 65, 31; 69, 19 Zeta - 63,20,22; 69,23-25 BD +31°1O48 [NSV 02537] chart, 2 6 ,2; 4 5 ,7-8; 5 2 ,1; 6 1 ,9-10; dropped 66,4 5 BAA Journal: Papers on variable stars - 6 8 ,1; 69,19-21 Be stars - 64,13 Bias - 21,6 Binocular Group (VSS) - 19,1-4 Group Coordinator - 1 4 ,2; LPV Project - 1 2 ,2; charts, 1 4 ,2; charts, 42 ,8 Programme - 1 2 ,2; 1 9 ,2; Priority List - 1 9 ,3; 1988 - 67,1-6 Priority List - 70,7-8 Uncertain variations - 50,5-7 ‘The Binocular Programme’, M.D.
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    British Astronomical Association Variable Star Section Circular No 77, August 1993 ISSN 0267-9272 Office: Burlington House, Piccadilly, London, W1V 9AG Section Officers Director Tristram Brelstaff, 3 Malvern Court, Addington Road, Reading, Berks, RG1 5PL Tel: 0734-268981 Assistant Director Storm R Dunlop 140 Stocks Lane, East Wittering, Chichester, West Sussex, P020 8NT Tel: 0243-670354 Telex: 9312134138 (SD G) Email: CompuServe:100015,1610 JANET:SDUNLOP@UK. AC. SUSSEX.STARLINK Secretary Melvyn D Taylor, 17 Cross Lane, Wakefield, West Yorks, WF2 8DA Tel: 0924-374651 Chart John Toone, Hillside View, 17 Ashdale Road, Secretary Cressage, Shrewsbury, SY5 6DT Tel: 0952-510794 Nova/Supernova Guy M Hurst, 16 Westminster Close, Kempshott Rise, Secretary Basingstoke, Hants, RG22 4PP Tel & Fax: 0256-471074 Telex: 9312111261 (TA G) Email: Telecom Gold:10074:MIK2885 STARLINK:RLSAC::GMH JANET:GMH0UK. AC. RUTHERFORD.STARLINK. ASTROPHYSICS Pro-Am Liaison Roger D Pickard, 28 Appletons, Hadlow, Kent, TN11 0DT Committee Tel: 0732-850663 Secretary Email: JANET:RDP0UK.AC.UKC.STAR STARLINK:KENVAD: :RDP Computer Dave McAdam, 33 Wrekin View, Madeley, Telford, Secretary Shropshire, TF7 5HZ Tel: 0952-432048 Email: Telecom Gold 10087:YQQ587 Eclipsing Binary Director Secretary Circulars Editor Director Circulars Assistant Director Subscriptions Telephone Alert Numbers Nova and Supernova First phone Nova/Supernova Secretary. If only Discoveries answering machine response then try the following: Denis Buczynski 0524-68530 Glyn Marsh 0772-690502 Martin Mobberley 0245-475297 (weekdays) 0284-828431 (weekends) Variable Star Gary Poyner 021-3504312 Alerts Email: JANET:[email protected] STARLINK:BHVAD::GP For subscription rates and charges for charts and other publications see inside back cover Forthcoming Variable Star Meeting in Cambridge Jonathan Shanklin says that the Cambridge University Astronomical Society is planning a one-day meeting on the subject of variable stars to be held in Cambridge on Saturday, 19th February 1994.
  • Variable Star Section Circular

    Variable Star Section Circular

    ΒΑΛ The British Astronomical Association VARIABLE STAR SECTION CIRCULAR 64 "LIGHT-CURVE” AUGUST 1986 ISSN 0267-9272 Office: Burlington House, Piccadilly, London, W1V 9AG SECTION OFFICERS: Director D.R.B. Saw, 'Upanova1, 18 Dolllcott, Haddenham, Aylesbury, Bucks. HP17 8JG Tel: Haddenham (0844) 292065 Assistant Director S.R. Dunlop, 140 Stocks Lane, East Wittering, nr Chichester, West Sussex P020 8NT Tel: Bracklesham Bay (0243) 670354 Secretary M.D. Taylor, 17 Cross Lane, Wakefield, West Yorkshire WF2 8DA Tel: Wakefield (0924) 374651 Programme Secretaries: Assistant Secretary (Post temporarily vacant) Telescopic Assistant Secretary J. Toone, 2 Hilton Crescent, Boothstown, Binocular Worsley, Manchester M28 4FY Tel: 061 702 8619 Eclipsing Binary J.E. Isles, Rose Cottage, 22 High Street, Secretary Wescott, Bucks. HP18 OPU Tel: Aylesbury (0296) 651779 Nova/Supernova G.M Hurst, 16 Westminster Close, Search Secretary Kempshott Rise, Basingstoke, Hants. RG22 4PP Tel: Basingstoke (0256) 471074 Chart Secretary J. Parkinson, 229 Scar Lane, Golcar, (except Eclipsing) Huddersfield, West Yorkshire HD7 4AU Tel: Huddersfield (0484) 642947 For subcription rates and charges for charts and other publications see inside back cover. Editorial It has been suggested that these C irc u la rs are often a little 'dry' and technical for some members. We are always happy to receive more 'personal' items and hope to include more in future issues. We are also including an occasional short note on some of the terms encountered, and which may not be fully explained in some of the specific articles. The first such item appears on p.13. If you have any queries, however elementary, please send them in, and we shall do our best to provide the answers.
  • Hyperspace  NASA BPP Program  Books 8

    Hyperspace  NASA BPP Program  Books 8

    Advanced Space Propulsion Concepts for Interstellar Travel Gregory V. Meholic [email protected] Planets HR 8799 140 LY 11/14/08 Updated 9/25/2019 1 Presentation Objectives and Caveats ▪ Provide a high-level, “evolutionary”, information-only overview of various propulsion technology concepts that, with sufficient development (i.e. $), may lead mankind to the stars. ▪ Only candidate concepts for a vehicle’s primary interstellar propulsion system will be discussed. No attitude control No earth-to-orbit launch No traditional electric systems No sail-based systems No beamed energy ▪ None of the following will be given, assumed or implied: Recommendations on specific mission designs Developmental timelines or cost estimates ▪ Not all propulsion options will be discussed – that would be impossible! 2 Chapters 1. The Ultimate Space Mission 2. The Solar System and Beyond 3. Challenges of Human Star Flight 4. “Rocket Science” Basics 5. Conventional Mass Ejection Propulsion Systems State-of-the-Art Possible Improvements 6. Alternative Mass Ejection Systems Nuclear Fission Nuclear Fusion Matter/Antimatter Other Concepts 7. Physics-Based Concepts Definitions and Things to Remember Space-Time Warp Drives Fundamental Force Coupling Alternate Dimension / Hyperspace NASA BPP Program Books 8. Closing Information 3 Chapter 1: The Ultimate Space Mission 4 The Ultimate Space Mission For humans to travel to the stars and return to Earth within a “reasonable fraction” (around 15 years) of a human lifetime. ▪ Why venture beyond our Solar System? Because we have to - humans love to explore!!! Visit the Kuiper Belt and the Oort Cloud – Theoretical home to long-period comets Investigate the nature of the interstellar medium and its influence on the solar system (and vice versa) – Magnetic fields, low-energy galactic cosmic rays, composition, etc.
  • FY13 High-Level Deliverables

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    National Optical Astronomy Observatory Fiscal Year Annual Report for FY 2013 (1 October 2012 – 30 September 2013) Submitted to the National Science Foundation Pursuant to Cooperative Support Agreement No. AST-0950945 13 December 2013 Revised 18 September 2014 Contents NOAO MISSION PROFILE .................................................................................................... 1 1 EXECUTIVE SUMMARY ................................................................................................ 2 2 NOAO ACCOMPLISHMENTS ....................................................................................... 4 2.1 Achievements ..................................................................................................... 4 2.2 Status of Vision and Goals ................................................................................. 5 2.2.1 Status of FY13 High-Level Deliverables ............................................ 5 2.2.2 FY13 Planned vs. Actual Spending and Revenues .............................. 8 2.3 Challenges and Their Impacts ............................................................................ 9 3 SCIENTIFIC ACTIVITIES AND FINDINGS .............................................................. 11 3.1 Cerro Tololo Inter-American Observatory ....................................................... 11 3.2 Kitt Peak National Observatory ....................................................................... 14 3.3 Gemini Observatory ........................................................................................