David's Astronomy Pages Images - Session 1457 (2026-10-01)

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Images (S1458)

Objects	Session Notes
11P/Tempel-Swift-LINEAR - Comet  (non-detection) 220P/McNaught - Comet   Nova Aql 2026 - Nova with Type Nova Transient AT 2026rdg   M31 - Spiral Galaxy with Type FeII Transient AT 2026aabo  (non-detection)   NGC 383 - Elliptical Galaxy (Part of ARP 331)   Variable Stars (photometric monitoring) - RX And, BL Lac   Nearby Stars (astrometric monitoring) - Gliese 65 (UV Cet)	- Late night session (4.1 hr) - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 9°C (min) - CCD Temperature:  -15°C - Notes from 2026-10-01 >> - -

Observing Result

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11P/Tempel-Swift-LINEAR  - Comet  (non-detection)

11P/Tempel-Swift-LINEAR - 2026-10-02 (passing through Andromeda) Sun Distance 1.45 AU Earth Distance 0.54 AU (80.9 million km)		11P/Tempel-Swift-LINEAR - 2026-10-02 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 42.7 arcsec/hr, Dec -4.1 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 7 x 45s exposure (average combine), 3x3 binning, Clear Filter 2026-10-02 01:34 UT (#1457060-68) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		Annotated CCD Image (125% size, square root scale, cropped) 7 x 45s exposure (average combine), 3x3 binning, Clear Filter 2026-10-02 01:34 UT (#1457060-68) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Images of Comet 11P Tempel-Swift-LINEAR on Comets 2026 Page  >>

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220P/McNaught  - Comet

220P/McNaught - 2026-10-02 (passing through Taurus) Sun Distance 1.87 AU Earth Distance 1.03 AU (153.5 million km)		220P/McNaught - 2026-10-02 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -6.9 arcsec/hr, Dec -19.0 arcsec/hr) Poor quality image (cloud, single frame)
Annotated CCD Image (50% size, square root scale) 60s exposure (single frame), 3x3 binning, Clear Filter 2026-10-02 02:34 UT (#1457097) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		Annotated CCD Image (100% size, square root scale, cropped) Image details as above
Images of Comet 220P McNaught on Comets 2026 Page  >>

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Nova Aql 2026  - Nova with Type Nova Transient AT 2026rdg

Nova Aql 2026 (Aquila) Discovery Magnitude 12.53 (r-ZTF Filter) vs Prior Non-Detection Limiting Magnitude (r-ZTF Filter) Group reports the discovery of a candidate nova.(DCAP238=ZTF26abemjfk) https://dcap-minruining.github.io/DCAP/ Image taken with SQA130mm, Luminance 200sx3. ( TNS 2026rdg ) [ Novae ]

Nova Aql 2026 (Nova) - 2026-10-01 (T+92.7d) Image below (2026-10-01.958) was taken 92.7 days after discovery of 2026rdg Position of earlier transient (distinct but fading) is shown by white cross-hairs Measured Magnitude +15.04 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 4 x 60s exposure (average combine), 3x3 binning, Clear Filter 2026-10-01 23:01 UT (#1457007-10) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of Nova Aql 2026 on Novae 2026 Page  >>

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M31  - Spiral Galaxy with Type FeII Transient AT 2026aabo  (non-detection)

M31 with AT 2026aabo (Andromeda) AT 2026aabo (Type: FeII) discovered 2026-08-29.395 UT by ATLAS Alias: ZTF26abramlb, ATLAS26kqn, MASTER OT J004454.26+413310.2, GOTO26jfq, PS26hne Discovery Magnitude 18.5784 (g-ZTF Filter) vs Prior Non-Detection Limiting Magnitude 20.8339 (g-ZTF Filter) ( TNS 2026aabo ) [ Messier Objects ]

M31 with AT 2026aabo - 2026-10-02 (T+33.7d) Image below (2026-10-02.097) was taken 33.7 days after discovery of 2026aabo Position of earlier transient (not visible) is shown by white cross-hairs Non-Detection Limiting Magnitude +16.2 (Clear Filter) Poor quality image (cloud/poor sky transparency)

Annotated CCD Image (125% size, square root scale, cropped) 2 x 180s exposure (average combine), 3x3 binning, Clear Filter 2026-10-02 02:23 UT (#1457091-92) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2026aabo (in M31 AT2026aabo) on Transients 2026 Page  >>

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NGC 383  - Elliptical Galaxy (Part of ARP 331)

NGC 383 (Pisces) cf. Ast.Now, Oct 2026, p69 Part of ARP 331

NGC 383 - Elliptical Galaxy with adjacent galaxies NGC 380 & PGC 3950

Annotated CCD Image (50% size, log scale) 2 x 180s exposure (average combine), 3x3 binning, Clear Filter 2026-10-02 00:55 UT (#1457047-50) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 383 - Detail

Annotated CCD Image (125% size, log scale, cropped) 2 x 180s exposure (average combine), 3x3 binning, Clear Filter 2026-10-02 00:55 UT (#1457047-50) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Annotated CCD Image (125% size, log scale, cropped) Image details as above

NGC 380 - Elliptical Galaxy

Annotated CCD Image (125% size, log scale, cropped) Image details as above

NGC 383 (Pisces)

Annotated negative CCD Image (50% size, square root scale) Image details as above

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