Add HERMES instrument (Mercator telescope)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: ivh

examples/hermes_example.py

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+"""Reducing HERMES data with PyReduce.
+
+HERMES (High Efficiency and Resolution Mercator Echelle Spectrograph)
+at the Mercator telescope, La Palma.
+
+Fiber modes:
+  HRF - High Resolution Fibre (default, R~85000)
+
+File types:
+  BIAS     - bias frames
+  HRF_FF   - flatfields (Tungsten lamp)
+  HRF_TH   - wavelength calibration (ThAr + Ne lamps)
+  HRF_OBJ  - science/object spectra
+"""
+
+import os
+
+from pyreduce.pipeline import Pipeline
+
+base_dir = os.environ.get("REDUCE_DATA", os.path.expanduser("~/REDUCE_DATA"))
+
+steps = (
+    "bias",
+    "flat",
+    "trace",
+    # "curvature",
+    "norm_flat",
+    "wavecal_master",
+    # "wavecal_init",
+    # "wavecal",
+    "science",
+    # "continuum",
+    # "finalize",
+)
+
+data = Pipeline.from_instrument(
+    instrument="HERMES",
+    target="HD 82106",
+    night="2026-04-12",
+    channel="",
+    steps=steps,
+    base_dir=base_dir,
+    input_dir=os.path.join(base_dir, "HERMES"),
+    plot=1,
+).run()

pyreduce/instruments/HERMES/__init__.py

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+"""
+Handles instrument specific info for the HERMES spectrograph
+
+High Efficiency and Resolution Mercator Echelle Spectrograph
+at the Mercator telescope, La Palma.
+"""
+
+import logging
+
+from ..common import Instrument
+
+logger = logging.getLogger(__name__)
+
+
+class HERMES(Instrument):
+    def add_header_info(self, header, channel, **kwargs):
+        header = super().add_header_info(header, channel)
+        return header

pyreduce/instruments/HERMES/config.yaml

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+# HERMES instrument configuration
+# High Efficiency and Resolution Mercator Echelle Spectrograph
+# Mercator telescope, La Palma
+# Detector: E2V42-90 (CCD), 2048x4608 active pixels
+
+__instrument__: HERMES
+instrument: INSTRUME
+id_instrument: HERMES
+telescope: Mercator
+
+date: DATE-OBS
+date_format: fits
+
+extension: 0
+orientation: 3
+transpose: false
+
+prescan_x: 53
+overscan_x: 47
+prescan_y: 0
+overscan_y: 64
+naxis_x: NAXIS1
+naxis_y: NAXIS2
+
+gain: DETGAIN
+readnoise: 5.5
+dark: 0
+sky: 0
+exposure_time: EXPTIME
+
+ra: OBJ_RA
+dec: OBJ_DEC
+longitude: -17.8792
+latitude: 28.7603
+altitude: 2333
+target: OBJECT
+observation_type: OBSMODE
+
+# File classification keywords and patterns
+kw_bias: OBSMODE
+kw_flat: OBSMODE
+kw_curvature: OBSMODE
+kw_scatter: OBSMODE
+kw_orders: OBSMODE
+kw_wave: OBSMODE
+kw_comb: null
+kw_spec: OBSMODE
+
+id_bias: BIAS
+id_flat: HRF_FF
+id_orders: HRF_FF
+id_curvature: HRF_TH
+id_scatter: HRF_FF
+id_wave: HRF_TH
+id_comb: null
+id_spec: HRF_OBJ
+
+# Fiber configuration: 2 fibers per order (science + simultaneous cal/sky)
+# Fiber 1 is the object fiber, fiber 2 is the simultaneous reference fiber
+fibers:
+  fibers_per_order: 2
+  groups:
+    obj:
+      range: [1, 2]
+      merge: center
+    sky:
+      range: [2, 3]
+      merge: center
+  use:
+    default: [obj, sky]

pyreduce/instruments/HERMES/settings.json

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+{
+    "__instrument__": "HERMES",
+    "__inherits__": "defaults/settings.json",
+    "trace": {
+        "degree": 3,
+        "noise": 50,
+        "noise_relative": 0.05,
+        "min_cluster": 3000,
+        "filter_y": 8
+    },
+    "norm_flat": {
+        "extraction_height": 6,
+        "oversampling": 10
+    },
+    "wavecal_master": {
+        "extraction_height": 6
+    },
+    "science": {
+        "extraction_height": 6,
+        "oversampling": 10,
+        "swath_width": 600,
+        "smooth_slitfunction": 2
+    }
+}