AAVSO Alert Notice 641
V1490 Cyg multiwavelength campaign
July 24, 2018: Dr. Dirk Froebrich (University of Kent) has requested AAVSO observations to support their upcoming observations of V1490 Cyg. He writes:
"Background: We have recently discovered that the young star V1490 Cyg (situated in the Pelican Nebula IC 5070) is periodically occulted by material in its circumstellar disk(*). Our light-curves indicate a period of about 32 days, and the obscurations are comparable to UX-Ori type eclipses.
"We will be conducting a [six-week], high cadence, multi-wavelengths optical monitoring campaign (in BVRI) of this source to map out in high resolution the azimuthal distribution of the material in the disk around this young star. Our campaign will run from [1 August 2 018] to [15 September 2018] and we will use three 'observatories':
i) Daily observations with the LCO (in particular the 1m telescope at the McDonald Observatory (longitude ~104deg West).
ii) Daily observations with the University of Kent's Beacon Observatory (longitude ~1deg East).
iii) The observations will be supported by UK amateur astronomers who work with us as part of our HOYS-CAPS(**) citizen science project and are distributed across the entire UK.
"We estimate the the optimal cadence to fully map the azimuthal distribution of material in this object is about 6-8hrs. Thus we would like to request assistance from AAVSO observers to cover longitudinal gaps and to account for potential bad weather at our observing sites.
"Observations: We request CCD or DSLR observations of the target as often as possible and in as many optical filters as are available. In particular we would like BVRI observations, but U and Halpha are welcome as well if the equipment is available and the object can be detected.
"The brightness of the object outside occultations is: B~16.4, V~15.3, R~14.3, I~13.3; during the occultations the object will be up to 1.5mag fainter in all filters. Thus, all the observations should be deep enough to detect the target star at all states with good signal to noise, as we do not know the exact behavior of the object during this period.
"All images should be dark and flat-field corrected. The field of view should be large enough to ensure a sufficient number of comparison stars is available to perform an accurate relative photometric calibration.
"Please stack individual images taken in the same filter per night for an improved signal to noise before submission, but only if they are taken no further apart than 2hrs. Images taken over a longer duration should be stacked seperately.
"Data Submission: As this object is in IC 5070, and thus part of our HOYS-CAPS citizen science project, the reduced images should be submitted in FITS format via our web-upload system (***). Once they are processed the photometry of all the stars in the images will be available immediately publically via our web interface.
"To ensure accurate processing, the FITS header should contain information of the filter used, the total exposure time of the stacked images and the mid-point of the integrations in each stack."
Observations should also be submitted to the AAVSO International Database using WebObs and the name V1490 CYG.
"In case of any questions please contact the PI at df@star.kent.ac.uk or use the HOYS-CAPS facebook group(****)".
(*) http://adsabs.harvard.edu/abs/2018RNAAS...2b..61F
(**) http://astro.kent.ac.uk/~df/hoyscaps/index.html
(***) http://astro.kent.ac.uk/HOYS-CAPS/
(****) https://www.facebook.com/groups/342831266192555/
Coordinates (2000): RA 20 50 53.6 Dec +44 21 01 (from VSX)
Charts with a comparison star sequence for V1490 Cyg may be created using the AAVSO Variable Star Plotter (VSP).
V1490 Cyg is the topic of the AAVSO Campaigns and Observation Reports forum thread https://www.aavso.org/v1490-cyg-multiwavelength-cmpaign
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:
https://www.aavso.org/webobs
ALERT NOTICE ARCHIVE AND SUBSCRIPTION INFORMATION
An Alert Notice archive is available at the following URL:
https://www.aavso.org/aavso-alert-notic ... iscoveries
V1490 Cyg multiwavelength campaign
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 16 位訪客