Add Circles to label stars

[moemyself3]

Simple use of Circleapperature can be implemented

See example I wrote for manual inspection in jupyter-notebook:

from astropy.visualization import ZScaleInterval
from photutils import CircularAperture

with lc.fits.open( deepskypath+'.new') as hdu:
    ccd = hdu[0].data
vmin, vmax = lc.mm.minmax(ccd)

x1, y1 = master_cat[83]['xcentroid'], master_cat[83]['ycentroid']
x2 = []
y2 = []
for star in checkstar:
    x2.append(master_cat[int(star)-1]['xcentroid'])
    y2.append(master_cat[int(star)-1]['ycentroid'])

positions1 = [(x1,y1)]
positions2 = (x2,y2)
apertures = CircularAperture(positions1, r=40.)
apertures2 = CircularAperture(positions2, r=20.)
position = zip(x2, y2)
interval = ZScaleInterval()
vmin, vmax = interval.get_limits(ccd)
lc.plt.imshow(ccd, vmin=vmin, vmax=vmax, cmap='gray')
apertures.plot(color='limegreen', lw=1, alpha=1)
apertures2.plot(color='limegreen', lw=1, alpha=1)
lc.plt.text(x1,y1-50,'HP Aur', color='limegreen', fontsize=12)
for x, y in position:
    lc.plt.text(x,y-30,'check', color='limegreen',fontsize=8)
lc.plt.axis('off') # this rows the rectangular frame
lc.plt.savefig('deepsky_hpaur_170413.png', dpi = 300, transparent=True)