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CCD Images - Session 912 (2021-09-07)
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NGC 6184 - Spiral Galaxy with Type Ia Supernova 2021wkv NGC 6500 - Spiral Galaxy with Type Ia Supernova 2021wuf GCVS RR Lyr - Variable Star (RR Lyr Type) Du 1 - Planetary Nebula (attempt) K3-83 - Planetary Nebula Nova Cas 2021 - Nova (V1405 Cas) Nova Per 2020 - Nova (V1112 Per, AT2020abap) Variable Stars (photometric monitoring) - None
- SS Cyg attempt failed (cloud)
Nearby Stars (astrometric monitoring) - None
- Full night Session (6.9 hours). - Good sky conditions - Main aims of the session were to acquire a selection of targets as conditions allowed - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 11°C (min) - CCD Temperature: -5°/-10°C - Notes from 2021-09-07 >> [ Local Files >> ] -
| NGC 6184 with SN 2021wkv (Hercules) SN 2021wkv (Type: Ia, zhost=0.027329) discovered 2021/08/20.277 UT by ATLAS Alias: ATLAS21bgqy. Magnitude +18.2 at discovery (Rochester Supernova site | Rafa Ferrando image ) |
| NGC 6184 with SN 2021wkv - 2021-09-07
(T+18.6d) Image below (2021-09-07.876) was taken 18.6 days after discovery of 2021wkv SN position is shown by white cross-hairs. Measured mag +15.85 Image Link using Detection Threshold of 30.0 |
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| Annotated CCD Image (125% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-09-07 21:10 UT (#912004-08) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of SN 2021wkv (NGC 6184) on Supernovae 2021 Page >> |
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| NGC 6500 with SN2021wuf (Hercules) SN 2021wuf (Type: Ia) discovered 2021-08-23.372 UT by ATLAS Alias: ATLAS21bgsc (Rochester Supernova site | Mantero Andrea image ) |
| NGC 6500 with SN2021wuf - 2021-09-07
(T+15.5d) NGC 6500 (catalog mag + 12.2 or +13.3) NGC 6501 / PGC 61128 (catalog mag + 12.4 or +13.9) SN position in NGC 6500 is shown by white cross-hairs. Bright star in image is HIP 87823 / SAO 103226 (mag +6.7) |
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| Annotated CCD Image (50% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-09-07 21:32 UT (#912011-15) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| NGC 6500 with SN2021wuf - 2021-09-07
(T+15.5d) Image below (2021-09-07.891) was taken 15.5 days after discovery of 2021wuf SN position is shown by white cross-hairs. Measured mag +14.1 Image Link using Detection Threshold of 25.0 |
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| Annotated CCD Image (100% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-09-07 21:32 UT (#912011-15) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of SN 2021wuf (NGC 6500) on Supernovae 2021 Page >> |
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| GCVS RR Lyr (Lyra) RR Lyr, Period 0.5669 days |
| GCVS RR Lyr (Lyra) |
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| CCD Image (100% size, linear scale, cropped) 3 x 15s exposure (average combine), 3x3 binning, V Filter 2021-09-07 21:47 UT (#912019-25) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| RR Lyr Spectra - Rotated |
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| Annotated CCD Image (35% size, linear scale) 3 x 30s exposure (average combine), 2x2 binning, S Filter 2021-09-07 21:49 UT (#912021-27) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| RR Lyr Spectra - Rotated |
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| CCD Image (100% size, log scale, rotated, cropped) Image details as above |
| RR Lyr Spectra - Calibrated & Normalised . Calibrated using one point calibration in RSpec 2.0.0 1) Zero Order Star at 0 A + dispersion of 25.5 A/pixel Normalised on continuum at 5500 A on |
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| Spectra produced in RSpec 2.0.0 using Image taken with Star Analyser
200 3 x 30s exposure (average combine), 2x2 binning, S Filter 2021-09-07 21:49 UT (#912021-27) 12" LX200R (at f/10.4) + ST-10XME |
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| Spectra produced in RSpec 2.0.0 using Image taken with Star Analyser
200 Synthesis & Colour Filled Image details as above |
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| Du 1 (Cygnus) Ast. Now DeepSky Challenge Object, Sep 2012 No indication of planetary nebula in image below (30 mins total exposure) |
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| CCD Image (150% size, square root scale, cropped) 10 x 180s exposure (average combine), 3x3 binning, C Filter 2021-09-07 22:16 UT (#912032-41) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Du 1 - reference image HaRGB Composite with 9 hour total exposure time http://www.capella-observatory.com/ImageHTMLs/PNs/Du1.htm Original image cropped and reduced to the same size as my b/w image above |
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| HaRGB Composite image (cropped) Skinakas Observatory, Crete, 2011 60 cm instrument + SBIG STX16803 Credit : Josef Pöpsel & Stefan Binnewies (Germany) http://www.capella-observatory.com/ |
| Du 1 (attempt) - Earlier Detail (2019) No sign of the presumptive planetary nebula in this image (4 min total exposure time) |
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| CCD Image (150% size, cropped) 4 x 60s exposure (average combine), 3x3 binning, C Filter 2019-08-21 01:24 UT (#681035-38) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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| Negative CCD Image (150% size, cropped) Image details as above |
| Du 1- Earlier Wider View (2019) Ast. Now DeepSky Challenge Object, Sep 2012 |
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| Annotated CCD Image (50% size) 4 x 60s exposure (average combine), 3x3 binning, C Filter 2019-08-21 01:24 UT (#681035-38) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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| K3-83 (Cygnus) Position of K3-3 shown by white cross-hairs 30 mins total exposure A larger planetary nebula (Du-1), which was the principal target for imaging, lies at the centre of the field of view but is too faint to be visible (see Du-1 attempt above) |
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| CCD Image (70% size, square root scale, cropped) 10 x 180s exposure (average combine), 3x3 binning, C Filter 2021-09-07 22:16 UT (#912032-41) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| K3-83 Picture cropped to position K3-83 at centre of image |
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| Annotated CCD Image (100% size, square root scale, cropped) Image details as above |
| K3-83 - Detail |
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| Annotated CCD Image (200% size, square root scale, cropped) Image details as above |
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| Negative CCD Image (200% size, cropped) Image details as above |
| Du 1- Earlier Wider View (2019) Ast. Now DeepSky Challenge Object, Sep 2012 |
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| Annotated CCD Image (50% size) 4 x 60s exposure (average combine), 3x3 binning, C Filter 2019-08-21 01:24 UT (#681035-38) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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| Nova Cas 2021 (Cassiopeia) Nova in Cassiopeia discovered 2021-03-18.4236, by Yuji Nakamura (Japan) Magnitude at discovery +9.6 (unfiltered CCD) AT2021hkn (Type: Nova) reported by 2021/03/30.055 UT by Gaia Alias: Gaia21bpe, AT2021hkn, V1405 Cas |
| Nova Cas 2021 / AT2021hkn - 2021-09-07 (T+173.5d) Image below (2021-09-07.950) was taken 173.5 days after discovery of Nova Nova is shown by white cross hairs. Measured magnitude +7.83 Note: star object is saturated and shows some blooming, mag is probably underestimated (linked with Detection Threshold = 50) |
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| CCD Image (100% size, linear scale, cropped) 5 x 30s exposure (average combine), 3x3 binning, C Filter 2021-09-07 22:50 UT (#912055-59) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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| CCD Image (50% size, linear scale) Image details as above |
| Nova Cas 2021 (V1405 Cas) Spectra - 2021-09-07 (T+173.5d) |
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| Spectra produced in AstroMain using Image taken with Star Analyser
200 5 x 30s exposure (average combine), 2x2 binning, S Filter 2021-09-07 22:53 UT (#912060-64) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of Nova Cas 2021 on Novae Page >> |
| Nova Cas 2021 (V1405 Cas) Spectra - Calibrated . Calibrated using two point calibration in RSpec 2.0.0 1) Zero Order Star at 0 and 2) Ha emission line at 6563 A. Giving calibration scale of 25.5 Angstroms/pixel |
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| Spectra produced in RSpec 2.0.0 using Image taken with Star Analyser
200 5 x 30s exposure (average combine), 3x3 binning, C Filter 2021-08-24 00:57 UT (#907051-55) 12" LX200R (at f/10.4) + ST-10XME |
| Nova Cas 2021 (V1405 Cas) Spectra - Corrected . Calibrated Spectra corrected using Instrument Response determined from Reference Star HIP 115566 / SAO 20610 (Type B9III) taken at same altitude (85 deg) as Nova Cas 2021 V1405 Cas is reported to have a Classical Nova Spectrum cf. V1405 Cas Spectrum by Raymond Kneip, 2021-03-19 |
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| Spectra produced in RSpec 2.0.0 using Image taken with Star Analyser
200 Image details as above |
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| Spectra produced in RSpec 2.0.0 using Images taken with Star Analyser
200 Displayed using RSpec Presentation Manager Image details as above |
| Images of Nova Cas 2021 on Novae Page >> |
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| Nova Per 2020 (Perseus) Nova in Perseus discovered 2020/11/25.807 [ Novae ] Nova Per 2020 discovered independently by Seiji Ueda and Stanislav Korotkiy et al AT2020abap (Type: CV) reported 2020/11/27.230 UT by PGIR Alias: N Per 2020 , PGIR20fbf, TCP J04291888+4354233, TCP J04291884+4354232, V1112 Per |
| Nova Per 2020 - 2021-09-08 (T+286.2d) Image below (2021-09-08.048) was taken 286.2 days after discovery of nova Nova is shown by white cross hairs. Measured magnitude +15.35 (falling) |
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| Annotated CCD Image (100% size, linear scale, cropped) 5 x 90s exposure (average combine), 3x3 binning, C Filter 2021-09-08 01:14 UT (#912132-36) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of Nova Per 2020 on Novae Page >> |
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| This Web Page: | CCD Images - Session 912 (2021-09-07) |
| Last Updated : | 2022-01-08 |
| Site Owner : | David Richards |
| Home Page : | David's Astronomy Web Site |
