Timezone: Europe/Paris Site: lat 50.25°, lon 8.49°, elevation 660 meters Astronomical darkness: Sunday 2026-03-29 21:48 → Monday 2026-03-30 05:12 (7h 24m) Moon Phase: 87% — Waxing Gibbous • Rise 15:49 • Set 05:55 Score ≥80 = Good · 50–79 = OK · <50 = Poor — Score breakdown: Airmass 0–40 · Visibility 0–35 · Best-time 0–5 · Size 0–20 Grade Name Type Const Wdeg Hdeg MaxAlt° Airmass↓ Vis Best Local ----------------------------------------------------------------------------------------------------------------------- 100 Integrated Flux Nebula MBM 54 Reflection Dra 10.000 6.667 80.4 1.01 410 2026-03-30 03:58 92 M101 Pinwheel Galaxy Galaxy UMa 0.467 0.433 86.0 0.99 445 2026-03-30 02:58 84 M106 Galaxy CVn 0.317 0.133 86.9 0.99 450 2026-03-30 01:18 82 NGC 2841 Galaxy UMa 0.135 0.058 89.3 0.98 330 2026-03-29 22:23 81 M109 Galaxy UMa 0.127 0.078 87.0 0.99 450 2026-03-30 00:58 81 M51 Whirlpool Galaxy Galaxy CVn 0.183 0.117 86.8 0.99 450 2026-03-30 02:28 81 M81–M82 Pair GalaxyGrp UMa 0.981 0.548 71.1 1.05 440 2026-03-29 22:53 80 Hickson 68 GalaxyGrp CVn 0.283 0.200 79.9 1.01 400 2026-03-30 02:48 80 M108 Galaxy UMa 0.145 0.037 84.7 0.99 450 2026-03-30 00:08 80 M63 Sunflower Galaxy Galaxy CVn 0.217 0.117 81.6 1.00 445 2026-03-30 02:13 80 M97 Owl Nebula Planetary UMa 0.057 0.055 85.4 0.99 450 2026-03-30 00:13 80 NGC 3184 Galaxy UMa 0.123 0.115 81.0 1.01 350 2026-03-29 23:18 80 NGC 3675 Galaxy UMa 0.098 0.062 83.2 1.00 430 2026-03-30 00:23 80 NGC 4449 Galaxy CVn 0.103 0.073 83.7 1.00 450 2026-03-30 01:28 79 M94 Croc's Eye Galaxy Galaxy CVn 0.183 0.150 80.7 1.01 450 2026-03-30 01:48 79 NGC 4088 Galaxy UMa 0.097 0.037 89.8 0.98 450 2026-03-30 01:03 78 NGC 5907 Splinter Galaxy Galaxy Dra 0.212 0.023 84.0 1.00 380 2026-03-30 04:13 77 Abell 1656 Coma Cluster Galaxy Clus Com 1.667 1.000 67.6 1.08 405 2026-03-30 01:58 77 NGC 4490 Cocoon Galaxy Galaxy CVn 0.105 0.050 81.3 1.01 450 2026-03-30 01:28 76 M102 Galaxy Dra 0.075 0.017 84.6 1.00 385 2026-03-30 04:03 74 NGC 5371 Galaxy CVn 0.070 0.058 80.1 1.01 400 2026-03-30 02:53 72 NGC 4244 Silver Needle Galaxy CVn 0.277 0.045 77.4 1.02 450 2026-03-30 01:13 70 Abell 1367 Leo Cluster Galaxy Clus Leo 1.000 0.833 59.4 1.16 335 2026-03-30 00:43 70 IC 4182 Galaxy CVn 0.095 0.078 77.2 1.02 440 2026-03-30 02:03 69 NGC 3432 Galaxy LMi 0.113 0.028 76.2 1.03 370 2026-03-29 23:53 69 NGC 5033 Galaxy CVn 0.178 0.083 76.2 1.03 425 2026-03-30 02:13 69 NGC 6015 Galaxy Dra 0.083 0.037 78.0 1.02 365 2026-03-30 04:48 68 NGC 5005 Galaxy CVn 0.097 0.050 76.7 1.02 430 2026-03-30 02:08 67 M81 Bode's Galaxy Galaxy UMa 0.450 0.233 71.3 1.05 440 2026-03-29 22:53 66 Virgo Cluster Galaxy Clus Vir 8.000 8.000 52.3 1.26 240 2026-03-30 01:23 61 NGC 2976 Galaxy UMa 0.098 0.045 72.4 1.05 425 2026-03-29 22:48 60 Markarian's Chain GalaxyGrp Vir 2.000 0.333 52.8 1.25 250 2026-03-30 01:28 60 NGC 4631 Whale Galaxy Galaxy CVn 0.250 0.050 72.1 1.05 440 2026-03-30 01:38 59 NGC 3077 Galaxy UMa 0.090 0.075 71.6 1.05 445 2026-03-29 23:03 59 Leo Triplet GalaxyGrp Leo 0.677 0.846 53.0 1.25 255 2026-03-30 00:18 57 M82 Cigar Galaxy Galaxy UMa 0.183 0.067 70.7 1.06 440 2026-03-29 22:53 57 NGC 2787 Galaxy UMa 0.050 0.035 71.2 1.05 405 2026-03-29 22:18 53 M3 Globular CVn 0.300 0.300 68.0 1.08 365 2026-03-30 02:38 46 NGC 4559 Galaxy Com 0.178 0.073 67.6 1.08 415 2026-03-30 01:33 42 Hickson 44 GalaxyGrp Leo 0.267 0.167 61.4 1.14 270 2026-03-29 23:18 42 NGC 3344 Galaxy Leo 0.118 0.108 64.5 1.11 310 2026-03-29 23:43 42 NGC 4725 Galaxy Com 0.178 0.127 65.1 1.10 395 2026-03-30 01:48 41 M64 Black Eye Galaxy Galaxy Com 0.167 0.083 61.3 1.14 355 2026-03-30 01:53 41 M85 Galaxy Com 0.118 0.087 57.8 1.18 315 2026-03-30 01:23 40 NGC 4565 Needle Galaxy Galaxy Com 0.265 0.035 65.6 1.10 395 2026-03-30 01:33 39 Copeland's Septet GalaxyGrp Leo 0.067 0.050 61.4 1.14 355 2026-03-30 00:48 39 M100 Galaxy Com 0.123 0.105 55.4 1.21 285 2026-03-30 01:23 37 IC 3568 Lemon Slice Nebula Planetary Cam 0.013 0.013 57.8 1.18 450 2026-03-30 01:33 37 M98 Galaxy Com 0.158 0.047 54.5 1.23 275 2026-03-30 01:13 37 NGC 3628 Galaxy Leo 0.233 0.060 53.2 1.25 255 2026-03-30 00:18 36 M88 Galaxy Com 0.115 0.062 54.0 1.23 265 2026-03-30 01:28 36 M91 Galaxy Com 0.090 0.073 54.1 1.23 265 2026-03-30 01:33 36 M99 Galaxy Com 0.090 0.078 54.0 1.23 265 2026-03-30 01:18 35 M66 Galaxy Leo 0.152 0.070 52.6 1.26 245 2026-03-30 00:18 35 M86 Galaxy Vir 0.148 0.097 52.6 1.26 245 2026-03-30 01:23 35 M90 Galaxy Vir 0.158 0.073 52.8 1.25 250 2026-03-30 01:33 35 NGC 2903 Galaxy Leo 0.210 0.100 61.1 1.14 220 2026-03-29 22:33 35 NGC 3627 Galaxy Leo 0.152 0.070 52.6 1.26 245 2026-03-30 00:18 34 M105 Galaxy Leo 0.087 0.080 52.2 1.26 240 2026-03-29 23:48 34 M65 Galaxy Leo 0.145 0.042 52.7 1.26 245 2026-03-30 00:18 34 M84 Galaxy Vir 0.108 0.093 52.5 1.26 245 2026-03-30 01:23 34 M87 Galaxy Vir 0.138 0.110 52.0 1.27 235 2026-03-30 01:28 33 M95 Galaxy Leo 0.123 0.085 51.3 1.28 225 2026-03-29 23:43 33 M96 Galaxy Leo 0.130 0.087 51.4 1.28 225 2026-03-29 23:43 32 M89 Galaxy Vir 0.085 0.078 52.2 1.26 235 2026-03-30 01:33 ----------------------------------------------------------------------------------------------------------------------- Selection filters: • MIN_ALT = 45° — Only count visibility and scoring above this altitude. • MIN_DURATION_MIN = 15 min — Must stay ≥ MIN_ALT for at least this long. • MAX_AIRMASS = 2.00 — Must reach airmass ≤ this value (lower is better; 1.0 ≈ zenith). • EDGE_GUARD_MIN = 10 min — Best time must be ≥ this far from astro-dark edges. • REF_HOUR_LOCAL = 12:00; MIN_ALT_AT_REF = 30° — If 12:00 falls inside the window, altitude then must be ≥ 30°. • DEC_MAX_N = +90° — Declination cap disabled (no extra culling of far-north targets). • DIURNAL_SWING_MIN = 1.0° — Require at least this altitude swing in the window (rejects flat circumpolars).