IDENTITY PRESERVATION INSTRUCTION:
Using the uploaded photo as reference, preserve the person's exact facial features, face shape, eye color, skin tone, and unique characteristics while transforming the overall appearance into an astronomer. The facial likeness must remain 100% accurate and recognizable.

TRANSFORMATION DESCRIPTION:
Transform the subject into a professional astronomer. The person should be wearing a dark, cozy knit sweater or a white lab coat over a collared shirt. Include professional accessories such as round-rimmed glasses (if they don't wear them, add stylish clear frames), a vintage brass telescope, or a tablet displaying star charts. The atmosphere should be intellectual and focused, capturing the wonder of space exploration.

STYLE AND AESTHETIC PARAMETERS:
- Art style: Photorealistic, cinematic, and highly detailed. 8K resolution photography style.
- Lighting conditions: Dramatic and moody lighting. Use a mix of soft, warm indoor lighting (like a desk lamp) combined with cool, ethereal blue and purple light from a large window showing a starry night sky or a nebula projection. Rim lighting on the subject's hair and shoulders.
- Color palette: Deep blues, indigos, blacks, and warm amber/gold tones for the clothing and accessories. The background should have vibrant cosmic colors (nebulas, galaxies).
- Background treatment: A modern observatory interior with a large telescope pointing towards a skylight, or a blurred background of a galaxy map/star chart. The background should be atmospheric but not distracting from the face.

TECHNICAL QUALITY PARAMETERS:
- High resolution, 4K, detailed, ultra-sharp.
- Sharp focus on face and eyes (eyes must be tack sharp).
- Professional quality, studio photography, National Geographic style.
- Aspect ratio: 3:4 vertical portrait (suitable for social media profiles).
- Texture details: Realistic fabric texture on the sweater/coat, detailed hair strands, natural skin pores.

NEGATIVE PROMPT GUIDANCE:
Avoid: distorted features, unrealistic proportions, blurry face, loss of likeness, cartoonish style, low quality, pixelated, bad anatomy, extra fingers, deformed hands, watermark, text, signature, oversaturated colors, plastic skin texture.

USER CUSTOMIZATION:
{additional_context}

(Add your specific preferences here, e.g., "Make the glasses reflective", "Add a specific constellation in the background", "Change the sweater color to green", "Include a specific prop like a notebook")