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Images - Session 1034 (2022-08-31)
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C/2022 E3 (ZTF) - Comet AT2022sfe - Transient (Possible Nova) NGC 6745 - Spiral Galaxy with Type IIn Supernova 2022prr NGC 6894 - Planetary Nebula (The Little Ring Nebula) NGC 7492 - Globular Cluster - NGC 132, NGC 7594, WHL0137-08 attempts failed (bad guiding) Variable Stars (photometric monitoring) - SS Cyg, BL Lac Nearby Stars (astrometric monitoring) - HH And
- Post midnight session (4h). Didn't set observatory to start till 00:30 (even though clear sky in evening) - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 15°C (min) - CCD Temperature: -5°C - Notes from 2022-08-31 >>
| C/2022 E3 (ZTF) (passing through Hercules) Sun Distance 2.29 AU (approaching Earth Distance 2.18 AU (326.8 million km) |
C/2022 E3 (ZTF) - 2022-08-31 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -57.77 arcsec/hr, Dec -24.16 arcsec/hr) |
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| Annotated CCD Image (50% size, square root scale) 2 x 90s exposure (average combine), 3x3 binning, Clear Filter 2022-08-31 23:48 UT (#1034006-07) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
Annotated CCD Image (100% size, log scale, cropped) 7 x 90s exposure (average combine), 3x3 binning, Clear Filter 2022-08-31 23:52 UT (#1034006-12) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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| Images of C/2022 E3 (ZTF) on Comets 2022 Page >> |
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| AT 2022sfe (Cygnus) AT 2022sfe (Type: Nova) discovered 2022-08-16.190 UT by PGIR Discovery Magnitude +14.28 [ TNS 2022sfe ] |
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| Annotated CCD Image (50% size, linear scale) 5 x 20s exposure (average combine), 3x3 binning, Clear Filter 2022-09-01 02:49 UT (#1034100-04) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| AT 2022sfe - 2022-09-01 (T+15.9d) Image below (2022-09-01.117) was taken 15.9 days after discovery of 2022sfe Measured magnitude +14.71 (fading ?) Brightness of transient (at T+15.9d) seems too dim to be a nova (unless very distant), suggesting prehaps a CV.(dwarf nova type) |
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| Annotated CCD Image (100% size, linear scale, cropped) 5 x 20s exposure (average combine), 3x3 binning, Clear Filter 2022-09-01 02:49 UT (#1034100-04) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| AT 2022sfe - Spectra A slitless spectra image (3x30s, 3x3 binng, S Filter) was attempted but the exposure is much too short to show any detail in the transient's spectra Zero order star image (white circle), 1st order spectra (white rectangle) |
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| Annotated CCD Image (100% size, linear scale, rotated, cropped) 3 x 30s exposure (average combine), 3x3 binning, S Filter 2022-09-01 02:52 UT (#1034105-07) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| AT 2022sfe - Reference Image DSS2 image captured via Aladin. Position of transient is shown by purple cross-hairs at centre of image There is no indication of any precursor object at transient position. The transient (potentially of CV type) is confirmed |
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| DSS2 Colour Inage (from Aladin) |
| AT 2022sfe - Reference Image PANSTARRS image captured via Aladin. Position of transient is shown by purple cross-hairs at centre of image This is a deeper image than the DSS2 mage shows a potential precursor object (mag 21) at the transient's coordinates. Implies a transient shows a mag 6 brightning (not enough to be a nova ?) |
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| DSS2 Colour Inage (from Aladin) |
| Images of AT 2022sfe on Transients 2022 Page >> |
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| NGC 6745 with SN 2022prr (Lyra) SN 2022prr (Type: IIn) discovered 2022-07-27.300 UT by ASAS-SN Alias: ASASSN-22jne Discovery Mag +17.3 ( Rochester Supernova site | TNS 2022prr ) |
| NGC 6745 with SN 2022prr - 2022-09-01 (T+35.7d) Image below (2022-09-01.002) was taken 35.7 days after discovery of 2022prr Position of SN (bright) is shown by white cross-hairs Measured magnitude +15.07 |
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| Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2022-09-01 00:12 UT (#1034015-19) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of SN 2022prr (NGC 6745) on Supernovae 2022 Page >> |
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| NGC 6894 (Cygnus) Alias: The Little Ring Nebula Picture, p47. Ast Now, May 2018 [ Planetary Nebula ] |
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| Annotated CCD Image (50% size, square root scale) 5 x 45s exposure (average combine), 3x3 binning, Clear Filter 2022-09-01 02:31 UT (#1034084-92) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| NGC 6894 - Detail |
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| Annotated CCD Image (150% size, square root scale, cropped) Image details as above |
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| Annotated CCD Image (150% size, square root scale, cropped) Image details as above |
| NGC 6894 - Spectra Zero order image on far-left, 1st order spectra in centre Image shows classic Pl.Neb spectra |
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| CCD Image (100% size, linear scale) 4 x 90s exposure (average combine), 3x3 binning, S Filter 2022-09-01 02:39 UT (#1034093-97) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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| NGC 7492 (Aquarius) Deep Sky Challenge Object, Ast.Now, Oct 2021 [ Deep Sky Challanges (Ast.Now) ] [ Globular Star Clusters ] Image taken with target lying close to Meridian at 17 deg Altitude |
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| Annotated CCD Image (50% size, square root scale) 13 x 60s exposure (average combine), 3x3 binning, Clear Filter 2022-09-01 00:43 UT (#1034028-41) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| NGC 7492 - Detail New image is of a very similar quality to that of previous image taken on 2022-08-26 |
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| Annotated CCD Image (100% size, square root scale, cropped) Image details as above |
| NGC 7492 - Earlier Image (2022-08-26) |
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| Annotated CCD Image (100% size, square root scale, cropped) 6 x 60s exposure (average combine), 3x3 binning, Clear Filter 2022-08-26 01:22 UT (#1033025-30) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| NGC 7492 - Earlier Image (2022-08-20) |
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| Annotated CCD Image (100% size, square root scale, cropped) 4 x 90s exposure (average combine), 3x3 binning, Clear Filter 2022-08-20 01:44 UT (#1029089-93) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| NGC 7492 - Earlier Image (2009) |
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| CCD Image (cropped) 10 x 30s exposure (average combine), 3x3 binning, C Filter 2009-12-04 18:43 h UT (#402103-07 and 402221-25) 12" LX200R (at f/5.7) + ST-10XME Unguided |
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| This Web Page: | Images - Session 1034 (2022-08-31) |
| Last Updated : | 2024-06-17 |
| Site Owner : | David Richards |
| Home Page : | David's Astronomy Web Site |
