AAVSO Alert Notice 732 announces a campaign on the long period eclipsing binary ASASSN-21co. Please see the notice for details and observing instructions.
There are threads for this campaign under the following forums:
- Campaigns and Observation Reports: https://www.aavso.org/asassn-21-co-campaign
- Eclipsing Binaries: https://www.aavso.org/asassn-21-co-campaign-01
- Spectroscopy: https://www.aavso.org/asassn-21-co-campaign-02
Please subscribe to these threads if you are participating in the campaign so you can be updated by the astronomer and by HQ. Join in the discussion or ask questions there!
Many thanks, and Good observing,
Elizabeth O. Waagen, AAVSO HQ
I took a spectrum of asassn-21co.
It's pretty low s/n but shows some interesting m2iii spectrum features at wavelengths longer than 4800A, and yet at the blue end it ramps up like very hot star (but that might be an artifact of my calibration process).
I'm new to aavso. Where should I submit the fits spectrum (and/or raw files)? The spectroscopy submission page seems to limit spectroscopy to a specific limited list of stars.