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Statistics - so far

Visual Supernova Searching with the 40 inch Telescope at Siding Spring Observatory

Rev. Robert Evans, PASA, 14 (2), in press.

Next Section: 41 cm Telescope performance
Title/Abstract Page: Visual Supernova Searching with
Previous Section: Characteristics of this
Contents Page: Volume 14, Number 2

Statistics - so far

Basic results are set out in Tables 1, 2 and 3. The search commenced with four nights at the end of 1994. During 1995 a total of 52 nights were allocated. So far, during 1996 (up to May 9), a total of 25 nights have been allocated to this project. This included a record night when 376 galaxies were observed in just over eight hours. The number of different galaxies included in all of this observing is not known, but is probably around 2000.

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Year Usable Obs. Galaxies Supernovae
Hours Observed Seen
1994 26 571 1
1995 207 5223 5
1996 140 4015 3
Total 373 9809 9
Table 1: Observing with the 40 inch telescope, listed by calendar year

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Perth 40 inch 41cm
Mag. limit for SN 16.5-17.0
best conditions 17.5+ 16.5
normal 16.5-17.0 15.5-16.0
bright moon, 16.0
good seeing
bright moon, 15.0
bad seeing
Period 3 years 18 mths 18 mths
Good quality obs. (hours) 369+ 373 231
No. of galaxy obs. 5530 9809 13 267
Observing rate (galaxies/hr) 15 26.3 57.4
Total SNe seen 5-6 9 6
Discoveries 5-6 2 2
Other SNe seen 0 7 4
Rate of seeing SNe (SN/hr) 61 41 38
(SN/galaxy) 922 1022 2211
Table 2: Comparison between the three supernovae searches

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SN Details Perth 40 inch 40 inch 41 cm 41 cm
discovered discovered other seen discovered other seen
SN 1993K NGC 2223 *
15 mag
SN 1994R IC 2627 *
15 mag
SN 1994ae NGC 3370 * *
SN 1994ai NGC 908 *
16.5 mag
SN 1995D NGC 2962 * *
SN 1995G NGC 1643 *
IAUC 6138
SN 1995H NGC 3526 *
SN 1995V NGC 1087 * *
IAUC 6197
SN 1995W NGC 7650 *
16.5 mag
SN 1995ad NGC 2139 * *
IAUC 6239
SN 1996N NGC 1398 * *
16.5 mag
SN 1996W NGC 4027 * *
SN 1996X NGC 5061 * *
Table 3: Details of observed supernovae


Next Section: 41 cm Telescope performance
Title/Abstract Page: Visual Supernova Searching with
Previous Section: Characteristics of this
Contents Page: Volume 14, Number 2

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