[g__day (Matthew)]

Gary,

The details are:

Tpoint – 70 Stars 4 Oct 2011-10-04

Southern Hemisphere

************* AZIMUTH ************
MA: +232 seconds (+3.9 minutes).
Rotate axis East (counterclockwise).
For latitude -33.88°, the azimuth adjustment is 4.7 minutes.
Sigma=93.987

************* ALTITUDE ************
ME: -128 seconds (-2.1 minutes).
The polar axis should be raised -128 seconds (-2.1 minutes).
Sigma=95.899
coeff change value sigma

1 IH -86.192 -86.19 92.467
2 ID +286.867 +286.87 151.600
3 NP +22.545 +22.54 131.151
4 CH +87.512 +87.51 93.321
5 ME -128.002 -128.00 95.899
6 MA +233.006 +233.01 93.987
7 TF -42.010 -42.01 18.051
8 FO +59.133 +59.13 201.502

Sky RMS = 52.72
Popn SD = 56.02

* Correlations between terms:

ID +0.0429
NP -0.4144 +0.8097
CH -0.9910 -0.0658 +0.4032
ME -0.2123 +0.6394 +0.8707 +0.1991
MA +0.0483 +0.9797 +0.8269 -0.0690 +0.6584
TF +0.1176 -0.2965 -0.2115 -0.0348 -0.0109 -0.2705
FO +0.0734 -0.9306 -0.9106 -0.0538 -0.8695 -0.9136 +0.1766

IH ID NP CH ME MA TF

* fit

coeff change value sigma

1 IH -0.572 -86.76 92.540
2 ID -1.039 +285.83 151.450
3 NP -0.001 +22.54 130.689
4 CH +0.668 +88.18 93.320
5 ME +0.431 -127.57 95.333
6 MA -0.604 +232.40 93.818
7 TF +0.168 -41.84 18.084
8 FO +0.415 +59.55 200.598

Sky RMS = 52.72
Popn SD = 56.02

* Correlations between terms:

ID +0.0368
NP -0.4212 +0.8087
CH -0.9910 -0.0609 +0.4090
ME -0.2185 +0.6360 +0.8692 +0.2043
MA +0.0424 +0.9796 +0.8259 -0.0643 +0.6550
TF +0.1189 -0.3053 -0.2198 -0.0357 -0.0179 -0.2793
FO +0.0799 -0.9303 -0.9100 -0.0591 -0.8676 -0.9131 +0.1859

IH ID NP CH ME MA TF

IH : = -86.76
ID : = +285.83
NP : = +22.54
CH : = +88.18
ME : = -127.57
MA : = +232.40
TF : = -41.84
FO : = +59.55
* GSCAT

*****************************

So not nearly as good pointing under Tpoint RMS 52.7 arc second - versus +/- 16 arc seconds for MaxPoint the other day...

MaxPoint tells me (on 80 stars - well distributed) Telescope Errors are:

Hour Angle Bias: -00 04’ 11” Polar Azimuth 00 03’ 04”
Declination Bias: 00 02’ 17” Polar Altitude 00 00’ 25”
Collimation: -00 02’ 32” Tube Droop -00 01’ 38”
Axes Misalignment 00 04’ 13” Mount Flexure -00 09’ 01”

With the RMS being a circle 31.6 arc seconds in diameter