FLWO Tillinghast 60-inch Telescope Log
2019b May - August

Tillinghast Telescope Log for the Month of May 2019

April 2019 May June July August September 2019 Schedule Schedules TDC
DateObserverInstObsLostWeatherInstTelObsComments
05/01/2019MCalkinsTRES900000Obs all night with occasional, thin cirrus and good to excellent seeing
05/02/2019GEsquerdoTRES722000Clouds early which broke leaving mostly clear skies for the remainder. Seeing became poor in the last hour of the night. No problem
05/03/2019GEsquerdoTRES900000Clear to start with extremely thin cirrus arriving around midnight, sticking around for the remainder. Seeing was OK early becoming soft for a while with a wind direction change, returning to average for the last while. No problems
05/04/2019GEsquerdoTRES900000Clear to mostly clear all night with thin cirrus present in the middle half of the night. Seeing was a little better than average. No problems
05/05/2019GEsquerdoTRES900000A band of clouds fairly giving way to thin cirrus then clear skies until the very end of the night when the leading edge of a system came in. I was able to observe through it and stayed open all night. No problems on the last night of the TRES run
05/06/2019MCalkinsFAST6.502.0000Obs with good seeing but ever present cirrus
05/07/2019MCalkinsFAST6.02.52.5000Clouds at beginning of the night, clear with good seeing later
05/08/2019MCalkinsFAST71.51.5000After clouds moved out observed in clear skies with excellent seeing.... ADC cleaned yesterday afternoon....
05/09/2019MCalkinsFAST08.58.5000Clouds, rain, sadness. No observations
5/10/2019KKouroumpatzakisKepCam800000No 60-inch data
5/11/2019KKouroumpatzakisKepCam088000No 60-inch data
5/12/2019KKouroumpatzakisKepCam355000No 60-inch data
05/14/2019GEsquerdoTRES8.7500000Clouds this afternoon broke at sunset leaving a clear night but with variable seeing (good early, soft for a while, then average to end)
05/13/2019GEsquerdoTRES8.7500000Few fair-weather puffy clouds at sunset disappearing quickly as it got dark and remaining clear throughout. Seeing was OK most of the night. No problems to start the TRES run
05/15/2019GEsquerdoTRES80.750.75000Cirrus all night, mostly thin but thick enough once in the middle and again at the very end that shut me down. I fairly productive night despite the conditions. No problems
05/16/2019GEsquerdoTRES6.7522000Clear until just before 2:00 when gradually rising humidity created a cap cloud over the mountain for about 2 hours time. Skies cleared at astronomical twilight allowing a few observations of brighter targets before shutting down. Seeing was poor all ni
05/17/2019PBerlindTRES9.500000Thin clouds early, windy, soft seeing. Clear most of the night with improved seeing
05/18/2019PBerlindTRES54.54.5000Bright moon, thin and thick clouds during the night
05/19/2019PBerlindTRES1.588000Overcast most of night. Partially cloudy first 30 minutes and last hour
05/20/2019MCalkinsTRES7.51.01.0000Once clouds and humidity complied, observed in mostly clear skies and variable seeing
05/21/2019MCalkinsTRES544000Lost some time to clouds - otherwise, observed in good to variable seeing with occasional cirrus
05/22/2019MCalkinsTRES4.55.05.0000Obs in hazy skies (wind) and okay seeing before shut down by fog an precipitation
05/23/2019MCalkinsTRES9.000000Obs in clear skies and decent seeing throughout the night
05/24/2019GEsquerdoTRES8.2500000Clear all night with good and slowly improving seeing. No problems
05/25/2019GEsquerdoTRES8.2500000Clear all night but with soft to poor seeing most of the night, only improving a bit after astronomical twilight in the morning. No problems
05/26/2019GEsquerdoTRES8.2500000Clear all night with strong and gusty winds most of the night. Poor seeing throughout. No problems
05/27/2019GEsquerdoTRES8.2500000Light fair weather clouds at sunset disappearing quickly as it got dark, leaving clear skies for the remainder. Seeing was poor most of the night, improving at the very end once the wind died down. No problems
05/28/2019GEsquerdoTRES8.2500000Clear most of the night with only a brief batch of clouds early on that I was able to observe around
05/29/2019MCalkinsTRES8.500000Obs all night in clear skies and good seeing. No issues
05/30/2019MCalkinsTRES8.500000Obs all night in clear skies and good seeing
05/31/2019MCalkinsTRES8.500000Obs all night in clear skies and mostly good seeing

Tillinghast Telescope Log for the Month of June 2019

April 2019 MayJune JulyAugust September 2019 Schedule Schedules TDC
DateObserverInstObsLostWeatherInstTelObsComments
06/01/2019GEsquerdoTRES8.000000Clear all night with soft seeing all night. Humidity spiked in the last hour or so of the night, approaching the closure limit before sunrise
06/02/2019GEsquerdoTRES800000Clear all night with some dust in the sir from the high winds over the last few days. Possibly some light smoke from a fire near Nogales as well. Seeing was average, especially after the first few hours. No problems
06/03/2019GEsquerdoTRES800000Clear all night with good seeing for 2/3 of the night, then softening with a wind direction change near the end. No problems to end the TRES run
06/04/2019Giovinazzi
Calkins
FAST800000Obs in clear skies with good seeing
06/05/2019MCalkinsFAST800000Clear night with good seeing.... A compression spring for the west dome drive wheel came off during the night. I looked, but couldn't find the retention nut.# Dome worked fine for the remainder of the night. If no one else can look at it during the day I'll address it this afternoon.
06/06/2019Giovinazzi
Calkins
FAST821100Lost pointing for just one hour; skies were cloudy throughout the night, but in the beginning it was cloudy enough to warrant closing up the dome for an hour. Otherwise, data looks clean
06/07/2019MGiovinazzi
MCalkins
FAST711000Cloudy at the beginning of the night, but after a couple of hours skies cleared up for good
06/08/2019MGiovinazziFAST800000Mostly clear skies throughout the night
06/09/2019MGiovinazziFAST355000Heavy clouds in the beginning and end of night caused difficult observing conditions. Skies cleared slightly during the middle of the night, but observations were still hard to come by; moon + clouds made faint targets difficult to hunt/track
06/10/2019MGiovinazziFAST444000Weather was terrible in the beginning of the night; bright moon, heavy clouds, and even some rainfall. Skies cleared up around midnight for the rest of the night
06/11/2019GEsquerdoTRES7.750.50.5000Clouds at the beginning held of starting observations before breaking. Thin but variable clouds all night becoming mostly clear at times. Seeing was poor, becoming average as the night progressed. No problems
06/12/2019 GEsquerdo TRES 6.5 1.75 1.75 0 0 0 Clear early with good seeing. Clouds came in leaving me idle for a while before thinning then clouding over again at the end. Seeing degraded in the latter part with the clouds
06/13/2019 GEsquerdo TRES 8.25 0 0 0 0 0 Mostly clear all night with nearby clouds during the first half. Seeing was quite variable and particularly altitude sensitive, being fairly poor low down but OK higher up
06/14/2019 GEsquerdo TRES 8 0 0 0 0 0 Clear all night with mostly average but variable seeing. One projector arm hang at the very start of the night, but otherwise no problems
06/15/2019 GEsquerdo TRES 8 0 0 0 0 0 Clear all night with average seeing. No problems
06/16/2019 GEsquerdo TRES 8 0 0 0 0 0 Clear to start then gradually increasing cirrus starting after midnight, becoming annoyingly thick at twilight. No problems
06/17/2019 MCalkins TRES 8.5 0 0 0 0 0 crescent
06/18/2019 M Calkins TRES 8.5 0 0 0 0 0 Obs all night in clear skies with good seeing...
06/19/2019 GEsquerdo TRES 8 0 0 0 0 0 Clear all night with fairly good seeing
06/20/2019 GEsquerdo TRES 8 0 0 0 0 0 Clear all night with average seeing for the first half becoming soft for the second half. No problems
06/21/2019 GEsquerdo TRES 8 0 0 0 0 0 Clear all night but with soft seeing. No problems
06/22/2019 GEsquerdo TRES 8 0 0 0 0 0 Clear all night with improved seeing over the last couple of nights
06/23/2018 PBerlind TRES 8 0 0 0 0 0 clear, seeing 1-2"
06/24/2019 PBerlind TRES 8 0 0 0 0 0 clear all night, seeing 1-2"
06/25/2019 DLatham TRES 7 1 1 0 0 0 Some high clouds moving across from the southwest at sunset, late start. Good seeing initially, gradually growing softer. Clouds move in for a while after midnight. Worked through and around them. Calibrations while waiting on clouds
06/26/2019 DLatham TRES 8 8 0 0 0 0 Some clouds to the south at sunset, some to the north at dawn, but clear over Mount Hopkins all night as far as I could tell. Seeing was quite good to start with, maybe 1.5 seconds. Most stars disappeared down the hole. The seeing blew up to 5 seconds
06/27/2019 DLatham TRES 6 2.5 2.5 0 0 0 Things started out great. The sky was clear and the seeing was excellent. Then clouds rolled in from the southeast, a harbinger of the monsoon to come. There was even a rain shower, I closed in the nick of time. The clouds moved on after a couple of hour
06/28/2019 DLatham TRES 4 4.5 4.5 0 0 0 Clouds most of the night. I worked through sucker holes from time to time. The equipment all worked
06/29/2019 PBerlind TRES 0 8 8 0 0 0 Rain and clouds, no observing
06/30/2019 PBerlind TRES 7.5 0.5 0.5 0 0 0 Started to clear after sunset. Telescope images much worse than last week, large astigmatism, coma, guide tv images very dark. Low throughput. M1 has large tilt in cell. 1.2m panic at ha +3:40 +17

Tillinghast Telescope Log for the Month of July 2019

April 2019 MayJune JulyAugust September 2019 Schedule Schedules TDC in dark skies and good seeing
DateObserverInstObsLostWeatherInstTelObsComments
07/01/2019 PBerlind TRES 4 4 4 0 0 0 Rain in the afternoon, cleared for first half of night. Seeing ok, telescope images rough
07/02/2019 MCalkins FAST 7.0 1.0 1.0 0 0 0 Thin clouds throughout the night, moderate seeing
07/03/2019 MCalkins FAST 8.0 0 0 0 0 0 Obs in somewhat murky skies and decent seeing
07/04/2019 MCalkins FAST 8.0 0 0 0 0 0 Once the moon set, observed in dark skies and good seeing
07/05/2019 MCalkins FAST 0 8 8 0 0 0 monsoons...
07/06/2019 MCalkins FAST 0 8 8 0 0 0 No one at telescope
07/07/2019 MCalkins FAST 5 0 0 0 0 0 Obs in clear skies with good seeing after moon set. Sinks in building are both clogged with standing water. Is there a drainage valve somewhere that has been shut?
07/09/2019 GEsquerdo TRES 8 0 0 0 0 0 Mostly clear all night with some light debris clouds at the start and again at the end. Seeing was below average to somewhat poor all night
07/10/2019 GEsquerdo TRES 2.25 5.75 4.5 1.25 0 0 Clouds for most of the night, breaking a bit after 1:00 allowing some observations
07/11/2019 GEsquerdo TRES 0 8 8 0 0 0 Clouds all night. Never opened
07/12/2019 GEsquerdo TRES 3.25 4.75 4.75 0 0 0 Clouds most of the night, clearing around 1:00, then annoying debris clouds at the very end. An unexpected clearing allowing some science to be done
07/13/2019 PBerlind TRES 0 8 8 0 0 0 rain, clouds, clearing late
07/14/2019 PBerlind TRES 0 8 8 0 0 0 Unplugged focus motor indicator because it is picking up noise from mountain radio causing erratic readings
07/15/2019 GEsquerdo TRES 7.5 0.5 0.5 0 0 0 Clouds at sunset broke leaving mostly clear skies. I was able to work around most of this, especially with a stretch of clear overhead for a while. Seeing was quite good in the middle of the night. No problems
07/16/2019 GEsquerdo TRES 2.5 5.5 5.5 0 0 0 Clouds at sunset then somewhat clear to start the night until thicker cirrus arrived. Variable clouds, quite thick at times, for the bulk of the night. Spent most of the time idle, then closed
07/17/2019 GEsquerdo TRES 0.75 7.25 7.25 0 0 0 Clouds most of the night with thunder and very light rain early. A thinning happened in the last quarter of the night, but wasn't terribly long lasting. Observed a few brighter stars and a standard before shutting down again
07/18/2019 GEsquerdo TRES 0 8 8 0 0 0 Clouds all night with light rain part way through. Never opened
07/19/2019 M Calkins TRES 2.5 0 6.5 0 0 0 When clouds allowed, observed in good seeing
07/20/2019 M Calkins TRES 4.5 5.0 5.0 0 0 0 Primarily observed Giants in mostly good seeing through holes and thin cirrus. No problems with telescope or instrument
07/21/2019 M Calkins TRES 0.5 8.5 8.5 0 0 0 Monsoons....
07/22/2019 M Calkins TRES 0 9 9 0 0 0 Monsoon storms
07/23/2019 GEsquerdo TRES 0 8 8 0 0 0 Clouds all night. Never opened
07/24/1029 GEsquerdo TRES 4.75 3.5 3.5 0 0 0 Clouds early becoming partly cloudy at midnight, clearing before dawn
07/25/2019 GEsquerdo TRES 0 8.25 8.25 0 0 0 Cloudy early then mostly cloudy after midnight. Debris clouds from the earlier storms kept trying to dissipate but would be followed by another wave. I opened a couple times to see how transparent these clouds were and found them thicker than they appea
07/26/2019 GEsquerdo TRES 1.25 7 7 0 0 0 Thin clouds just after sunset becoming mostly cloudy as nearby storms and debris clouds filled in rendering the remainder unusable. No problems
07/27/2019 GEsquerdo TRES 0 8.25 8.25 0 0 0 Clouds all night. Never opened
07/28/2019 PBerlind TRES 4 4 4 0 0 0 Partly cloudy night. Telescope images have changed again, now there is more astigmatism, less trefoil. One big focus jump after a slew