From 594c2a0f8340f095b89a231743ff6bd61b962e9e Mon Sep 17 00:00:00 2001
From: michealroberts <michael@observerly.com>
Date: Tue, 22 Oct 2024 12:46:41 +0100
Subject: [PATCH] feat: add "JD-OBS" header set to fits.AddObservationEntry()
 in @observerly/iris

feat: add "JD-OBS" header set to fits.AddObservationEntry() in @observerly/iris
---
 pkg/fits/fits.go | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/pkg/fits/fits.go b/pkg/fits/fits.go
index 8c1db27..36c035c 100644
--- a/pkg/fits/fits.go
+++ b/pkg/fits/fits.go
@@ -167,6 +167,14 @@ func (f *FITSImage) AddObservationEntry(observation *FITSObservation) *FITSImage
 		Comment: "Date of observation",
 	}
 
+	f.Header.Floats["JD-OBS"] = struct {
+		Value   float32
+		Comment string
+	}{
+		Value:   observation.MJDObs + 2400000.5,
+		Comment: "Julian Date of the observation",
+	}
+
 	f.Header.Floats["MJD-OBS"] = struct {
 		Value   float32
 		Comment string