Log Book Entry No.129

Days, Calendar Created: 17 Jan 2017 17:21:28 Days, Calendar Last Revised: 25 Jan 2017 11:37:58 Person AlanisCozens1 Text PH2900 Observation 1 Group C

IDEA!

time: 17:22 arrived in dome. ENK JT AS AC AA

remove rain cover from telescope
open doors of dome (ropes(tie up), bolts)

go onto roof and observe sky

select Capella(HIP 24608) on Stellarium

RA/Dec 5h17m57.85s / 46deg 00' 40.4''

h(capella) = LST(egham) - \alpha = 1h41m52.8s(egham) - 5h17m57.85s(capella) =-3h36m5.05s

rotate dome to correct direction

callibrate telescope - move telescope manually to point at Capella, it can then know its position on the night sky and be moved using the stellarium programme

first take caps off telescope, turn telescope on(make sure everything is plugged in and switched on,checking all leads and sockets)

telescope automatically moves towards the west)

centre capella in finder scope(scope speed 5)

Synchronise coordinates on Capella ( object -> star -> named -> Capella -> Enter (2 seconds) -> Enter to sync)

move telescope away from capella

use the go-to key to get back to capella

Move to almaaz(HIP 23416) using the hipparcus catalogue method outlined in the script

Use Hip method again to move to Betelgeuse (HIP 27989), and bellatrix (HIP 25336)

open MaxIm DL Pro 5

exposure 1 sec start poor out of focus picture

change exposure to 0.1 sec, X bin 4 continuously taking images

use knobs on scope to unlock mirror and change the focal length, simultaneously slowly moving scope to get the star in the centre of the field of view of the CCD

get star in and out of focus and take picture

calibrate telescope to set on aldebaran

use focus (4 on pad) to get good focus with microfocuser that changes the camera not the mirror

take images in different exposuresmove to fainter section of sky, star cluster near aldebaran cluster 2 shows fringe from coolingtake 10 images to find saturation around 65000 for this CCD

move to 02 Tau and found bleeding and saturation at 10s, took multiple images at different exp times (1x1 binning)

found that simple auto dark callibration was on contiunued with this then took one without this

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Subject PH2900 Observation 1 Group C
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Topic revision: r3 - 25 Jan 2017 - AlanisCozens1

 
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