AGN Reference Fields

IC 1495

Finding chart and local comparison-star sequence for IAC80/CAMELOT2 optical differential photometry.

All fields Download IC 1495 CSV Static finding chart

IC 1495

IC 5327 · MCG−02−59−024 · PGC 71631 · 2MIG 3166
3 comparison stars
Interactive DSS2 view. The AGN is labelled “AGN”; comparison stars are labelled 1, 2 and 3 to match the table and the static IAC80 finding chart below.
Target (J2000)23:30:47.73   −13:29:07.6
Degrees352.698875, −13.485444
InstrumentIAC80 / CAMELOT2
Filters / apertureR, V · 5 px = 1.61″ fiducial

IC 1495 was monitored on two consecutive nights in 2025 October: 26 exposures of 250 s in Johnson/Bessell R on October 13 and 35 exposures of 300 s in Johnson/Bessell V on October 14.

Reference-star photometry. The three numbered comparison stars are matched to APASS DR9. The V magnitudes are used directly from APASS. The R magnitudes are estimates transformed from APASS Sloan r′ and i′ using the Lupton relation.
Transformation check. V transformed independently from APASS g′ and r′ differs from the direct APASS V value by only 0.029, 0.028 and 0.038 mag for stars 1–3, respectively.
Uncertainty convention. APASS catalogue entries reported with zero formal uncertainty are retained as raw zeros in the machine-readable data and displayed here as unavailable uncertainties.

Static finding chart

The AGN is marked by the green cross. Comparison stars are marked by red circles and numbered 1–3. The chart retains the adopted APASS V magnitudes in the lower-right corner.

IAC80 finding chart for IC 1495 with three numbered comparison stars and V magnitudes

Comparison-star sequence — APASS DR9 + Lupton transformations

ID RA (deg) Dec (deg) V ± σV
APASS · Vega		 B−V ± σ
APASS		 g′ ± σg′
APASS · AB		 r′ ± σr′
APASS · AB		 i′ ± σi′
APASS · AB		 VLupton ± σ
g′−r′		 Rest ± σ
Lupton r′−i′
1352.644555−13.503099 14.544 ± 0.0371.061 ± 0.110 15.081 ± 0.05114.210 ± 0.04313.965 ± 0.082 14.573 ± 0.03313.994 ± 0.039
2352.739712−13.531192 15.816 ± —0.921 ± — 16.266 ± 0.06815.543 ± 0.03415.459 ± — 15.844 ± 0.03515.374 ± 0.025
3352.707451−13.544119 13.876 ± 0.0160.815 ± 0.092 14.247 ± 0.06713.677 ± 0.01413.528 ± 0.066 13.914 ± 0.03013.489 ± 0.023

V, B−V, g′, r′ and i′ are APASS DR9 catalogue quantities. Rest is a transformed estimate from Sloan r′ and i′ and is not a direct APASS R measurement. “—” denotes a catalogue-reported zero or otherwise unavailable uncertainty.

Observing log

DateBandExposureAcquiredFiducial 5-px IDV set
2025-10-13R250 s2624
2025-10-14V300 s3533
Source: Izviekova et al. (2026, manuscript) — IC 1495 multiwavelength analysis
Public article link will be added after release.

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This page provides an IC 1495 / IC 5327 finding chart, the numbered local comparison sequence used in the IAC80/CAMELOT2 reductions, APASS DR9 J2000 positions and photometry, Lupton-derived R estimates, and observing information.