CH Cyg session 2018.06.30
Posted: Sat Jun 30, 2018 10:27 am
Hello all,
As per aavso, CH Cyg is fading suddenly (see the light curve).
I have fully clear forecast for todays very short night, would like to get parallel coverage, chosing the optimal observing schedule plan.
My default plan:
- CH Cyg at R~13000, H-alpha (LHires 2400/mm, 35u slit, max 15 min if no relevant fluctuation, need to have the same time cover with H8)
- CH Cyg in the UV (Ca II region, 1 hour, maybe more if seeing rapid changes / too low snr)
- VV Cep in the UV
+ perhaps something else if fits
I'd appreciate if anyone could provide low resolution coverage (blue oriented, let the H-alpha burn in), e.g. LISA or Alpy in parallel.
If anyone have ability to observe CH Cyg H-alpha above R~10000 (or eventually an eShel), I'd likely skip this.
Cheers,
Peter
As per aavso, CH Cyg is fading suddenly (see the light curve).
I have fully clear forecast for todays very short night, would like to get parallel coverage, chosing the optimal observing schedule plan.
My default plan:
- CH Cyg at R~13000, H-alpha (LHires 2400/mm, 35u slit, max 15 min if no relevant fluctuation, need to have the same time cover with H8)
- CH Cyg in the UV (Ca II region, 1 hour, maybe more if seeing rapid changes / too low snr)
- VV Cep in the UV
+ perhaps something else if fits
I'd appreciate if anyone could provide low resolution coverage (blue oriented, let the H-alpha burn in), e.g. LISA or Alpy in parallel.
If anyone have ability to observe CH Cyg H-alpha above R~10000 (or eventually an eShel), I'd likely skip this.
Cheers,
Peter