t1m_guide1.py
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import numpy as np
import os
import sys
import time
import traceback
paths = ["../../src", "../../../guitastro_device_ascomcam/src"]
for path in paths:
if path not in sys.path:
sys.path.insert(0,path)
from guitastro_device_ascomcam import Device_Ascomcam
from pymodbus.client.sync import ModbusTcpClient
if __name__ == "__main__":
client = ModbusTcpClient(host='172.16.10.10', port=502)
client.connect()
name = "T1M_FinderCam"
device = "ASCOM.ASICamera2.Camera"
model = "ZWO"
serial_number = "12345"
description = "Test"
dev = Device_Ascomcam("ASCOMCAM", transport="USB", name=name, description=description, model=model, serial_number=serial_number, device=device)
# ------------------------
real = False
dev.open(real)
# ------------------------
cam = dev.components['camera'][1]
# ------------------------
cam.ima.fcontext_create("t1m_guide", "Test autoguiding")
cam.ima.fcontext = "t1m_guide"
cam.ima.extension = ".fit"
rootdir0 = cam.ima.rootdir
cam.ima.rootdir = os.path.join(rootdir0, "t1m")
print(f"{cam.__repr__()}")
# ------------------------
if real == False:
import shutil
fname_in = os.path.join(cam.ima.rootdir, "..", "..", "data", "m57.fit")
fname_out = os.path.join(cam.ima.rootdir, "m57.fit")
shutil.copy(fname_in, fname_out)
# ------------------------
for k in range(4):
try:
if real:
# ------------------------
exptime = 0.001
cmd = f"camera SET exptime {exptime}"
print("*"*20,f"\ncmd => \"{cmd}\"")
dev.commandstring(cmd)
# ------------------------
cmd = "camera DO ACQ START"
print("*"*20,f"\ncmd => \"{cmd}\"")
dev.commandstring(cmd)
while True:
time.sleep(0.5)
# ------------------------
cmd = "camera GET timer"
timer = dev.commandstring(cmd)
if timer == -1:
break
else:
cam.ima.load(fname_out)
time.sleep(5)
# -----------------------
astrotable = cam.ima.sextractor(kappa_sigma = 3)
astrotable.useFileNames = True
astrotable.fn.fcontext_create("t1m_guide")
astrotable.fn.fcontext = "t1m_guide"
astrotable.fn.rootdir = cam.ima.rootdir
fname = astrotable.fn.join("sextractor.txt")
astrotable.write(fname, format="astrotable", overwrite=True)
astrotable.keepcols(['x','y','flux', 'flag', 'fwhm'])
array = np.array([astrotable.getcol('x'),astrotable.getcol('y'),astrotable.getcol('flux'),astrotable.getcol('flag'),astrotable.getcol('fwhm')]).T
# --- Sort the matrix by the column index 2
array_sorted = array[np.lexsort(([-1]*array[:,[2]]).T)]
INDX_X = 0
INDX_Y = 1
INDX_FLUX = 2
INDX_FLAG = 3
INDX_FWHM = 4
astrotable.setcol('x', array_sorted[:,INDX_X])
astrotable.setcol('y', array_sorted[:,INDX_Y])
astrotable.setcol('flux', array_sorted[:,INDX_FLUX])
astrotable.setcol('flag', array_sorted[:,INDX_FLAG])
astrotable.setcol('fwhm', array_sorted[:,INDX_FWHM])
fname = astrotable.fn.join("sextractor_sorted.txt")
astrotable.write(fname, format="astrotable", overwrite=True)
# ---
naxis1 = cam.ima.getkwd("NAXIS1")
naxis2 = cam.ima.getkwd("NAXIS2")
border = 50
xmin = border
xmax = naxis1-border
ymin = border
ymax = naxis2-border
ident_limit = 5
ident_limit2 = ident_limit*ident_limit
nb_star = 5
# ---
if k == 0:
nlig, ncol = array_sorted.shape
valids = np.ones(nlig)
for klig in range(nlig):
if array_sorted[klig, INDX_FLAG] > 0:
valids[klig] = 0
x = array_sorted[klig, INDX_X]
if x < xmin or x > xmax:
valids[klig] = 0
y = array_sorted[klig, INDX_Y]
if y < ymin or y > ymax:
valids[klig] = 0
array_sorted0 = array_sorted.copy()
else:
# --- match stars and compute dx, dy
nlig0, ncol0 = array_sorted0.shape
nlig, ncol = array_sorted.shape
decals = []
kstar = 0
for klig0 in range(nlig0):
if kstar > nb_star:
break
if valids[klig0] == 0:
continue
x0 = array_sorted0[klig0, INDX_X]
y0 = array_sorted0[klig0, INDX_Y]
for klig in range(nlig):
x = array_sorted[klig, INDX_X]
y = array_sorted[klig, INDX_Y]
if not real:
x += 0.1*np.random.normal(1)
y += 0.1*np.random.normal(1)
dx = x - x0
dy = y - y0
d2 = dx*dx + dy*dy
if d2 < ident_limit2:
# --- same star
decal = [dx, dy, x0, y0]
decals.append(decal)
continue
kstar += 1
decals = np.array(decals)
#print(f"{decals=}")
# --- compute median of dx, dy
dxs = decals[:,0]
dys = decals[:,1]
dx_med = np.median(dxs)
dy_med = np.median(dys)
print(f"{dx_med=:.2f} {dy_med=:.2f}")
# ----------------------------
if dx_med < 0:
m_alpha = 54
else:
m_alpha = 55
if dy_med < 0:
m_delta = 50
else:
m_delta = 51
client.write_coils(m_alpha, True, unit=0)
client.write_coils(m_delta, True, unit=0)
time.sleep(0.3)
client.write_coils(m_alpha, False, unit=0)
client.write_coils(m_delta, False, unit=0)
# ----------------------------
except:
traceback.print_exc(file=sys.stdout)
# ------------------------
print("*"*20,"\nClose")
dev.close()