AAVSO Alert Notice 478
Transformed photometry of young stars in Cha requested January 16, 2013
Dr. Peter Abraham (Konkoly Observatory, Budapest, Hungary) has requested the assistance of AAVSO observers in monitoring eight young stars in Chamaeleon in support of photometry he and his colleagues will be obtaining with the VLT/ISAAC (infrared) and Herschel Space Observatory (far-infrared) during January-February 2013.
Calibrated, transformed VRI photometry is requested to precisely monitor changes in the optical brightness and colors of these objects. Calibration and transformation of the photometry is crucial - if all of the data are not on the same system and particularly if the colors are not transformed, it will be extremely difficult to correlate the data usefully.
Previous observations indicate that the stars are highly variable. Brightness changes can be expected from a few tenths of a magnitude to up to 1-2 magnitudes on a timescale of a few days to a few weeks.
Names, coordinates, and average V magnitudes of the targets:
NAME RA_2000 DEC_2000 V mag
CR Cha 10:59:06.972 -77:01:40.307 11.1
CT Cha 11:04:09.090 -76:27:19.380 12.5
HP Cha (Glass I) 11:08:14.938 -77:33:52.190 12.7
VW Cha 11:08:01.486 -77:42:28.850 12.8
VZ Cha 11:09:23.790 -76:23:20.760 13.3
WW Cha 11:10:00.108 -76:34:57.890 13.1
WX Cha 11:09:58.738 -77:37:08.880 14.0
XX Cha 11:11:39.656 -76:20:15.250 15.3
Observers are asked to try to obtain one to two sets of VRI images per night. It is recommended to take one set of VRI images on as short a timescale as possible (15-30 minutes for a full set of image pairs in all three filters), and then a second set later in the night if the object is at a favorable airmass (1 < z < 2). Intensive time-series are not needed.
Charts for these objects may be created using the AAVSO Variable Star Plotter (http://www.aavso.org/vsp). Please use the photometry table provided for each of these objects.
Please submit observations to the AAVSO International Database using the names provided in the table, including HP Cha (not Glass I).
This campaign is being followed from the AAVSO Observing Campaigns page (http://www.aavso.org/observing-campaigns).
This AAVSO Alert Notice was compiled by Elizabeth O. Waagen.
-------------------------------------------
SUBMIT OBSERVATIONS TO THE AAVSO
Information on submitting observations to the AAVSO may be found at:
http://www.aavso.org/observing/submit/
ALERT NOTICE ARCHIVE AND SUBSCRIPTION INFORMATION
An Alert Notice archive is available at the following URL:
http://www.aavso.org/publications/alerts/
Subscribing and Unsubscribing may be done at the following URL:
http://www.aavso.org/publications/email/
Transformed photometry of young stars in Cha requested
Exoplanet occultation, asteroid occultation,
solar research, comet observation, astrometry, etc.
solar research, comet observation, astrometry, etc.
回覆文章
1 篇文章
• 第 1 頁 (共 1 頁)
回到「業餘天文研究專區 Amateur Astronomers' Research Area」
前往
- 天文 ASTRONOMY
- ↳ FAQ 天文
- ↳ 天文話題 Everything about Astronomy
- ↳ 天文攝影 Astrophotography
- ↳ 太陽觀測和攝影 Solar Observation & Photography
- ↳ 望遠鏡 廠制儀器 測試報告專欄 Telescope Testing Report Center
- ↳ 自製天文望遠鏡 Amateur Telescope Making
- ↳ 自製天文儀器 diy Astro Equipment
- ↳ 天文儀器维修中心
- ↳ 廠製儀器 Factory Equipment
- ↳ Raspberry Pi 自動導星裝置 diy Autoguiding
- ↳ 天文台 Observatory
- ↳ 香港搖控天文台 Hong Kong Remote Telescope
- ↳ 玉衡遙控天文台 Jade Scope Observatory
- ↳ 天文物理 Astrophysics
- ↳ 業餘天文研究專區 Amateur Astronomers' Research Area
- ↳ 天文圖像處理技巧 Astro Image Processing Technique
- ↳ 氣象地理 Weather & Geography
- ↳ 天文活動消息 Astro Activity News
- ↳ 論壇公佈
- 風馬牛
- ↳ 談天說地 Chatting Square
- ↳ 花鳥蟲魚 Natural World
- ↳ 太空科技 Space Technology
- ↳ 3D打印 新工藝技術 3D Printing New Technology
- ↳ 電腦資訊科技 Information Technology
- ↳ 旅遊天地 Travelling around the World
- ↳ 談股說金
- ↳ 網站支援 Technical Support
- 姊妹網站
- ↳ 黃隆網站 wonglung.com
- ↳ 天文家園
- 廠商專區 Telescope Suppliers'Area
- ↳ 香港天文儀器
- ↳ 香港遥控天文有限公司
- ↳ 南京英田
- ↳ 江西智通
- ↳ 開信 Kson
- ↳ 日昇儀器社
- ↳ 巨眼儀器社
- ↳ 觀星者天文儀器社
- ↳ 達氏望遠鏡
- ↳ 哈雷
- ↳ 振旺光電 ( 大眾天文 )
- ↳ 博冠望遠镜( 鵬城光學 )
- ↳ GRUS 天文社
- ↳ 多尼爾公司
- ↳ 括蒼天文
- ↳ 宇隆光電
- ↳ 二手交易場 Second Hand Area
- 天文教室
- ↳ diy 磨制牛頓反射鏡 --- 視頻
- ↳ 赤道儀的安裝--怎樣平衡望遠鏡
- ↳ 自制天文望遠鏡 Making Astronomical Telescope
- ↳ 天文攝影入門 Introduction to Astrophotography
- ↳ 天文數碼攝影入門 Digital Astrophotography ABC
- ↳ 天文觀測入門 Introduction to Astro Observation
- ↳ 月食的觀測 Lunar Eclipse Observation
- ↳ 日食的觀測 Solar Eclipse Observation
- ↳ 星星相識 Stars,Constellations & Telescopes ABC
- 會員專區 Members Only
- ↳ 下載區 Download Area
- 石硤尾官立小學;德明中學校友專區 Old Schoolmates' Area
- ↳ 石硤尾官立小學
- ↳ 德明中學
誰在線上
正在瀏覽這個版面的使用者:沒有註冊會員 和 7 位訪客