Rick Bassham rickbassham

Instructions (works on amd64 and arm64)

A copy/paste guide to getting a full working astro-imaging computer running on Ubuntu 20.04 LTS. Installs latest stable versions of gpsd, KStars, INDI, OACapture, SkyChart, ASTAP, and Astrometry.net.

It uses the lightweight XFCE4 desktop, and allows you to VNC in, running everything locally on the astro-imaging pc.

Install Ubuntu Server 20.04.1

Raspberry Pi 4 Boot Ubuntu from USB SSD

This is a copy/paste guide to booting Ubuntu 20.04 from an SSD on a Raspberry Pi 4.

The majority of these commands came from this forum post: https://www.raspberrypi.org/forums/viewtopic.php?t=278791

Prep-work

This section only needs to be done the first time for a given Raspbery Pi 4. It flashes the EEPROM on the device to support booting from USB.

git remote rename origin upstream
git remote add origin https://github.com/user/FORK.git
git checkout -b newFeatureBranch

Whenever you need to update your fork based on the recent evolution of the original repo:

git checkout master

	from astropy.io import fits

	from PIL import Image

	import numpy

	import sys
	import os

	filepath = 'test.fit'

	package com.rickbassham.test;

	import java.io.File;
	import java.util.Arrays;
	import java.util.List;

	import ml.combust.bundle.dsl.Bundle;
	import ml.combust.mleap.core.types.StructField;
	import ml.combust.mleap.core.types.StructType;
	import ml.combust.mleap.runtime.MleapContext;

	<node name="/KStars/Ekos/Capture">
	<interface name="org.kde.kstars.Ekos.Capture">
	<method name="start">
	<annotation name="org.freedesktop.DBus.Method.NoReply" value="true"></annotation>
	</method>
	<method name="abort">
	<annotation name="org.freedesktop.DBus.Method.NoReply" value="true"></annotation>
	</method>
	<method name="suspend">
	<annotation name="org.freedesktop.DBus.Method.NoReply" value="true"></annotation>

	PHD2 version 2.6.8 [Linux], Log version 2.5. Log enabled at 2020-06-02 20:54:22

	Calibration Begins at 2020-06-02 21:24:48
	Equipment Profile = CGX-AT8RC-OAG
	Dither = both axes, Dither scale = 1.000, Image noise reduction = none, Guide-frame time lapse = 0, Server enabled
	Pixel scale = 0.74 arc-sec/px, Binning = 1, Focal length = 1625 mm
	Search region = 15 px, Star mass tolerance = 50.0%
	Camera = INDI Camera [ZWO CCD ASI174MM Mini], full size = 1936 x 1216, no dark, no defect map, pixel size = 5.9 um
	Exposure = 2000 ms
	Mount = INDI Mount [Celestron CGX], Calibration Step = 150 ms, Calibration Distance = 25 px, Assume orthogonal axes = no

	FROM --platform=arm64 ubuntu:20.04

	ARG DEBIAN_FRONTEND="noninteractive"
	ENV TZ=America/New_York

	RUN mkdir /src

	COPY . /src

	WORKDIR /src

	Process: kstars [16074]
	Path: /Applications/KStars.app/Contents/MacOS/kstars
	Identifier: ???
	Version: 3.5.0 (3.5.0)
	Code Type: X86-64 (Native)
	Parent Process: ??? [1]
	Responsible: kstars [16074]
	User ID: 501

	Date/Time: 2020-12-07 19:11:40.051 -0500

	#KStars version 3.5.5. Analyze log version 1.0.

	AnalyzeStartTime,2021-09-23 18:57:10.295,EDT
	MountState,0.000,Idle
	Temperature,1.265,22.010
	MountCoords,1.283,215.8417,-42.3375,215.0164,-0.0089,1,50.9208
	MountState,1.283,Parked
	Temperature,603.315,21.450
	Temperature,1204.794,21.080
	Temperature,1806.255,20.570