© 2019 by Tyler Richey-Yowell. Last updated December 16, 2019.

HST AND GROUND-BASED SIMULTANEOUS OBSERVATIONS

Have time on any optical spectrographs or CCDs?
Please consider joining our efforts for getting simultaneous UV - Ground-based data!

Our goal is to determine UV - optical (Ca II HK, H alpha, and broadband photometric) correlations and variations as a function of stellar age. This will be a critical component in determining UV fluxes between the time when HST is no longer sensitive to the UV and the first light of a future UV mission.

Target Name

HST Window*

Basic Observation Information

CD-46 644

Apr 20, 2020 - May 8, 2020
Jun 14, 2020 - Jun 15, 2020

RA/Dec: 02 10 55.39 -46 03 58.65
V: 11.14

BD+57 1274

Apr 22, 2020 - May 4, 2020
Jun 15, 2020 - Jun 17, 2020

RA/Dec: 10 31 43.22 +57 06 57.10
V: 9.674

HIP 107345

Oct 4, 2020 - Oct 20, 2020

RA/Dec: 21 44 30.12 -60 58 38.89
V: 11.628

HD 266611

Aug 31, 2020 - Sep 6, 2020
Oct 15, 2020 - Oct 31, 2020

RA/Dec: 06 57 04.69 +30 45 23.37
V: 9.745

UCAC4 525-009613

Feb 3, 2020 - Feb 3, 2020
Feb 5, 2020 - Mar 29, 2020

RA/Dec: 04 51 02.42 +14 58 16.68
V: 11.676

CT TUC

Jan 25, 2021 - Jan 28, 2021
Feb 07, 2021 - Feb 09, 2021
Mar 14, 2021 - Mar 29, 2021

RA/Dec: 00 25 14.66 -61 30 48.25
V: 11.34

BD+05 2767

Jun 8, 2020 - Jun 22, 2020
Jul 20, 2020 - Aug 10, 2020

RA/Dec: 13 34 21.50 +04 40 02.63
V: 9.927

CD-35 1167

Jan 18, 2021 - Jan 21, 2021
Feb 03, 2021 - Feb 5, 2021
Mar 12, 2021 - Mar 22, 2021

RA/Dec: 03 19 08.66 -35 07 00.30
V: 11.12

BD+16 502

Jan 27, 2020 - Feb 29, 2020
Mar 2, 2020 - Mar 23, 2020

RA/Dec: 03 43 52.56 +16 40 19.30
V: 9.900

TYC 8083-45-5

Apr 15, 2020 - May 3, 2020
Jun 05, 2020 - Jun 15, 2020

RA/Dec: 04 48 00.66 -50 41 25.69
V: 11.678

CD-23 1056

Dec 21, 2020 - Jan 20, 2021
Feb 02, 2021 - Feb 22, 2021

RA/Dec: 02 46 42.88 -23 05 11.80
V: 10.237

UCAC4 518-008871

Feb 08, 2021 - Apr 5, 2021

RA/Dec: 04 45 19.60 +13 34 27.34
V: 13.089

BD+49 2126

Apr 20, 2020 - Apr 29, 2020
Jun 10, 2020 - Jun 22, 2020

RA/Dec: 12 15 08.82+48 43 57.23
V: 10.507

TYC 8098-414-1

Apr 22, 2020 - May 1, 2020
Jun 03, 2020 - Jun 17, 2020

RA/Dec: 05 33 25.57 -51 17 13.17
V: 11.720

STKM 1-495

Feb 3, 2020 - Mar 30, 2020

RA/Dec: 04 35 02.55 +08 39 30.55
V: 11.88

V925 TAU

Dec 28, 2020 - Feb 19, 2021
Feb 21, 2021 - Feb 22, 2021

RA/Dec: 04 30 38.19 +22 54 28.83
V: 13.015

UCAC3 13-31217

Feb 12, 2021 - Feb 16, 2021
Mar 16, 2021 - Mar 16, 2021
Apr 1, 2021 - Apr 11, 2021

RA/Dec: 23 58 56.60 -83 39 42.53
V: 11.93

BD+07 499

Jan 13, 2020 - Feb 2, 2020
Mar 2, 2020 - Mar 16, 2020

RA/Dec: 03 20 29.19 +08 27 16.02
V: 9.63

*HST observation windows will be updated daily as we get more precise times.

LET US KNOW IF YOU CAN JOIN OUR EFFORTS

Thanks for your interest in our research! Please send me a message with the type, location, and dates of any observations you can contribute. Please also include the target name(s) you may be able to observe.