Search found 191 matches

by Terry Bohlsen
Tue Jul 30, 2019 8:15 am
Forum: Novae
Topic: ASASSN-19qv: classical nova (11 mag) in the SMC
Replies: 20
Views: 20616

Re: ASASSN-19qv: classical nova (11 mag) in the SMC

Hi All Sorry I'm slow replying Hamish. Well done! I have taken multiple spectra of this nova. It is getting pretty dim now at mag V=14.5 I don't think flux calibration would be easy with a SA200. I am using a slit spectrograph (LISA) and I can flux calibrate because I take simultaneous photometry th...
by Terry Bohlsen
Wed Jul 10, 2019 5:28 am
Forum: Novae
Topic: ASASSN-19qv: classical nova (11 mag) in the SMC
Replies: 20
Views: 20616

Re: ASASSN-19qv: classical nova (11 mag) in the SMC

I haven't had clear skies until last night.
Taken with my LISA R=1500
asassn-19qv_20190709_545_TBohlsen.png
Terry
by Terry Bohlsen
Sun Jun 30, 2019 10:48 am
Forum: Outbursts, Alerts, Monitoring
Topic: V1369 Cen
Replies: 64
Views: 130134

Re: V1369 Cen

I am posting to this old thread as I have been following this old nova and have taken spectra approximately yearly for the since the intensive monitoring ceased. It has slowly dimmed and is now in the nebula phase. Currently it is V= 13.4 v1369cen_20190629_484_TBohlsen.png v1369cen_19_18_17annual.pn...
by Terry Bohlsen
Sun Jun 30, 2019 10:32 am
Forum: Cataclysmic Stars
Topic: Rebrightening of V1047 Cen - please observe!
Replies: 3
Views: 9692

Re: Rebrightening of V1047 Cen - please observe!

I have taken a spectra of this old nova.
It is dim at V=14.6 so the SN is low.
v1047cen_20190627_466_TBohlsen.png
Terry
by Terry Bohlsen
Thu Jun 20, 2019 11:28 am
Forum: Introduction / Présentation
Topic: Kia Ora
Replies: 7
Views: 6572

Re: Kia Ora

Welcome from another southerner. If you need any help just ask.
Terry
Armidale NSW
by Terry Bohlsen
Sun Apr 14, 2019 1:03 pm
Forum: Symbiotic Stars
Topic: Suspected Symbiotic Stars: campaign for Adrian Lucy
Replies: 16
Views: 1913867

Re: Suspected Symbiotic Stars: campaign for Adrian Lucy

Hi These stars are starting to become visible in the evening again. I have taken spectra of 2 further targets. GSC9507:2249 which is the 6th star on the list with no name. _gsc95072249_20190412_517_TBohlsen.png GAA_DR2_41315875002733611280 _gaa_dr2_41315875002733611280_20190413_519_TBohlsen.png Chee...
by Terry Bohlsen
Sun Dec 23, 2018 1:55 am
Forum: Symbiotic Stars
Topic: Suspected Symbiotic Stars: campaign for Adrian Lucy
Replies: 16
Views: 1913867

Re: Suspected Symbiotic Stars: campaign for Adrian Lucy

We have had poor weather in December so I haven't been able to do much observing. I did have some clear skies last night but with a full moon. I observed GAIA DR2 4636654969717900032 which I have observed before. It is a mostly flat featureless spectrum. I also observed the second star on the list w...
by Terry Bohlsen
Tue Dec 11, 2018 11:52 am
Forum: Comets
Topic: comète 46p/wirtanen Alpy600 T400
Replies: 29
Views: 90955

Re: comète 46p/wirtanen Alpy600 T400

I also had a try t obtaining a spectra.
This was from the zenith but with some hazy cloud around.
I could not remove the sky background as this was too contaminated with the coma of the comet.
Terry
_46p-wirtanen_20181204_457_TBohlsen.png
_46p-wirtanen_20181204_457_TBohlsen.png (9 KiB) Viewed 12664 times
by Terry Bohlsen
Tue Nov 27, 2018 10:40 am
Forum: Outbursts, Alerts, Monitoring
Topic: Herbig Ae/Be campaign
Replies: 14
Views: 33039

Re: Herbig Ae/Be campaign

Ive also taken 2 spectra using my 3D printed LOSPEC. ~R=5000
Terry
_v1410ori_20181124_499_TBohlsen.png
_v1410ori_20181124_499_TBohlsen.png (8.78 KiB) Viewed 17709 times
_v346ori_20181125_473_TBohlsen.png
_v346ori_20181125_473_TBohlsen.png (9.11 KiB) Viewed 17709 times