David's Astronomy Pages CCD Images - Session 1011 (2022-05-25)

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Images (S1012)

Objects	Session Notes
C/2017 K2 (PANSTARRS) - Comet     AT 2022jrp - CV Type Transient (UG Candidate)     NGC 4088 - Spiral Galaxy (H I-206) with Type II Supernova 2022jzc NGC 4545 - Spiral Galaxy with Type II Supernova 2022fuc NGC 4647 - Spiral Galaxy with Type Ia (? Type Ib) Supernova 2022hrs     Variable Stars (photometric monitoring) - SS Cyg,  BL Lac, R CrB      Nearby Stars (astrometric monitoring) - None	- All night session (2.6 hours) - Summer twilight conditions     - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 5.5°C (min) - CCD Temperature:  -15°C - Notes from 2022-05-25 >>    [ Local Files >> ]

C/2017 K2 (PANSTARRS) - Comet

C/2017 K2 (PANSTARRS) (passing through Ophiuchus) Sun Distance 3.09 AU (approaching) Earth Distance 2.30 AU (343.9 million km)		C/2017 K2 (PANSTARRS) - 2022-05-26 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -47.11 arcsec/hr, Dec -16.83 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 3 x 45s exposure (average combine), 3x3 binning, C Filter 2022-05-26 01:25 UT (#1011061-63) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		CCD Image (100% size, square root scale, cropped) 9 x 45s exposure (average combine), 3x3 binning, C Filter 2022-05-26 01:27 UT (#1011061-69) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Images of C2017 K2 (PANSTARRS) on Comets 2021 Page >>
Images of C2017 K2 (PANSTARRS) on Comets 2022 Page >>

C/2017 K2 (PANSTARRS)  - False Colour Image Inverse Spectrum

C/2017 K2 (PANSTARRS)  -  2022-05-26

False Colour CCD Image (70% size, log scale) 9 x 45s exposure (average combine), 3x3 binning, C Filter 2022-05-26 01:27 UT (#1011061-69) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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AT 2022jrp - CV Type Transient (UG Candidate)

AT 2022jrp (Bootes) AT 2022jrp (Type: CV) discovered 2022-05-09.812 UT by XOSS Alias: XM116HT Discovery Magnitude +12.8 ' Classification : CV Type (Spectrum shows a blue continuum with H alpha in emission at zero redshift) ' Rochester Supernova site | TNS 2022jrp | XM116HT Discovery)

AT 2022jrp - 2022-05-26 (T+16.2d) Image below (2022-05-26.043) was taken 16.2 days after discovery of 2022jrp Position of reported transient is shown by white cross-hairs Measured magnitude +15.57 (fading)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, C Filter 2022-05-26 01:06 UT (#1011046-50) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2022jrp - Reference Image No obvious indication of an object at position of reported transient shown by mauve cross-hairs

DSS2 Image captured via in Aladin

Images of AT 2022jrp on Transients 2022 Page >>

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NGC 4088 - Spiral Galaxy (H I-206) with Type II Supernova 2022jzc

NGC 4088 with SN 2022jzc (Ursa Major) SN 2022jzc (Type: II) discovered 2022-05-16.204 UT by ZTF Alias: ZTF22aakdbia Discovery Magnitude 17.8 [ Rochester Supernova site | TNS 2022jzc ]

NGC 4088, Spiral Galaxy (H I-206) with SN 2022jzc (T+9.8d) [ Herschel 400 Objects ]

Annotated CCD Image (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2022-05-25 23:56 UT (#1011022-26) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 4088 with SN 2022jzc - 2022-05-25 (T+9.8d) Image below (2022-05-25.990) was taken 9.8 days after discovery of 2022jzc Position of SN (faint) is indicated by white cross-hairs

Annotated CCD Image (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2022-05-25 23:56 UT (#1011022-26) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 4088 with SN 2022jzc - Negative Image

Negative CCD Image (125% size, square root scale, cropped) Image details as above

NGC 4088 - Earlier Image (2009)

Annotated CCD Image (100% size scaling, cropped) 3 x 90s sec exposure (average combine), 3x3 binning, C Filter 2009-04-19 21:59 h UT (#363040-42) 12" LX200R  (at f/5.7) + ST-10XME

Images of SN 2022jzc (NGC 4088) on Supernovae 2022 Page >>

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NGC 4545 - Spiral Galaxy with Type II Supernova 2022fuc

NGC 4545 with SN2022fuc (Draco) SN 2022fuc (Type: II) discovered 2022-04-02.878 UT by Giancarlo Cortini Alias: ATLAS22lhg, ZTF22aadpuwe Discovery Magnitude 17 ' Past image of the same field taken on 2022/03/03.98 showed nothing at that position (limit mag.+18.5) '  ( Rochester Supernova site | TNS 2022fuc )

NGC 4545 with SN 2022fuc - 2022-05-26 (T+53.1d) Image below (2022-05-26.006) was taken 53.1 days after discovery of 2022fuc Position of SN (bright) is shown by white cross-hairs Measured magnitude +15.82

Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2022-05-26 00:18 UT (#1011029-33) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2022fuc (NGC 4545) on Supernovae 2022 Page >>

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NGC 4647 - Spiral Galaxy with Type Ia (? Type Ib) Supernova 2022hrs

NGC 4647 with SN2022hrs (Virgo) SN 2022hrs (Type: Ia) discovered 2022-04-16.619 UT by Koichi Itagaki Alias: ATLAS22mip Discovery Magnitude 15 (Clear Filter)  ( Rochester Supernova site | TNS 2022hrs | Forth Image) Whilst TNS Classification records 2022hrs as a Type Ia SN, spectra taken earlier with my equipment  (2022-04-27.913) suggest that it is actually a Type Ib SN

NGC 4647 with SN 2022hrs - 2022-05-26 (T+39.4d) Image below (2022-05-26.020) was taken 39.4 days after discovery of 2022hrs Position of SN (bright) is shown by white cross-hairs Measured magnitude +13.44 (fading)

Annotated CCD Image (150% size, square root scale, cropped) 2 x 180s exposure (average combine), 3x3 binning, C Filter 2022-05-26 00:34 UT (#1011036-37) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

SN2022hrs Spectra - 2022-05-26 (T+39.4d)

Spectra attempted but image quality very badly affected by cloud

SN2022hrs Classification

The classification of the spectra from SN 2022hrs was discussed earlier following acquistion of spectral images taken 2022-04-27, S1004 (see classification discussion) Although the TNS classification is recorded as Type 1a Supernova, my analysis suggests that SN 2022hrs it is actually a Type  Ib supernova due to absence of Si line at 6150 A and presence of distinct (He) absorption line at 5876 A.

Images of SN 2022hrs (NGC 4647) on Supernovae 2022 Page >>

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