Date: 2020 Feb 29 UTC
Observers: Duck, Vallely
TO: Josh Williams
SA: Olga Kuhn

Moon phase: Waxing crescent (illumination 20%)

Summary:
Good night of mostly LBC; one MODS target at the start.

Calibrations:
MODS standard G191B2B

Completed Programs:
ND_bs5/bs5
OSU_monitor/N2403
OSU_monitor/N3344
OSU_monitor/N3627
OSU_monitor/N4214
UVa_CANDELS/EGS_OB01
UVa_CANDELS/EGS_OB02
UVa_CANDELS/EGS_OB03
OSU_monitor/N4395*
OSU_monitor/M81
OSU_monitor/N5194*
OSU_monitor/N5474*
*exposure(s) impacted by clouds

--------
01:00 - Pretty cloudy, so going to start with
	MODS and hope it clears up a bit.

02:00 - Moving to bs5, the only useful target that
	is really visible right now.

02:15 - Now doing science exposures for bs5. Getting
	pretty variable extinction due to clouds,
	but the average seems to be between 1.5 and 2
	mag. Seeing began at ~1.1", but increased over
	the course of the observation to ~1.5" at some
	points.

03:10 - Added a couple exposures to compensate for the
	clouds and pre-twilight start. Lost one
	exposure's worth of time on MODS2B due to it
	hanging.

03:35 - Going to get standard G191B2B.

04:00 - Sky has cleared up a ton and conditions look
	good, so we're going to switch to LBC.

04:20 - Starting with N2403 to make sure we have a
	focus field with lots of stars for dohybrid.

04:35 - Now moving to N3344. Had to unwrap the 
	telescope after focusing/co-pointing.
	Seeing ain't great, about 1.8".

05:25 - On to N3627. Seeing is between 1.3" and 1.6".
	Lost the last exposure because right side
	mirror panicked.

06:25 - Recoverd, moving to N4214 and running dohybrid
	to recover from panic.

07:00 - Starting OB1 of CANDELS. Seeing is a bit better
	than 1.4".

07:40 - Re-collimated, now doing OB2 of CANDELS. Seeing
	is still a bit less than 1.4".

08:25 - Now getting OB3. Seeing down to 1.2".

09:10 - Back to monitor targets, getting N4395. Focus
	field is far from target, so after a rather
	long slew back to target the images were
	very out of focus. Going to dofpia on the
	target field to try to fix that.

09:25 - Starting attempt #2 on N4395. This time it
	worked, and seeing was between 1.1" and 1.3".
	Some clouds popped up that probably ruined
	the last exposure. Will return to redo the
	target if we can finish the rest of the
	priority 1/2 monitor targets before twilight.

09:35 - Moving to try to get M81 before it sets.
	Seeing is just a touch better than 1.5".

10:10 - On to N5747. Seeing starts at 1.2" and worsens
	as clouds appear. Clouds very much impacting
	images during second half of observation. Not
	good enough for science.

11:10 - Back on sky, going for N5194.
	Seeing started a bit rough, around 1.7". Still
	some clouds impacting the images, but these ones
	aren't obliterating the images as before.
	Seeing improved to about 1.2" as the observation
	progressed and the clouds cleared. Looks like a
	satellite trail in the last exposure.

11:50 - Re-doing the first set of images for N5194 to
	ensure clouds from prior observation aren't
	an issue.

12:15 - Now going back to N5754. Seeing is ~1.2". Last
	couple exposures are noticeably impacted by
	the post-twilight brightening sky.

13:00 - Taking flats, and then going to finish with
	biases.